Pernah mendengar istilah asam basa? Yuk, kita belajar mengenai asam basa, mulai dari sifat-sifat, cara membedakan, dan klasifikasinya di artikel Kimia kelas 11 ini!
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Kamu pernah makan lemon, nggak? Ketika dimakan, lemon tuh rasanya ada masam-masamnya gitu, kan? Duh, bayanginnya aja udah terasa nih, rasa masamnya di lidah!
Nah, kamu tahu nggak sih, lemon itu bisa terasa masam karena lemon mengandung senyawa asam. Senyawa asam mengandung ion H+ dan adanya ion H+ inilah yang membuat lemon rasanya masam.
Sebagian besar buah-buahan mengandung asam organik lemah, seperti asam sitrat pada jeruk, asam maleat pada apel, dan asam tartrat pada buah anggur. Selain itu, ada pula asam askorbat yang dikenal sebagai vitamin C yang banyak terdapat dalam buah yang berasa masam seperti buah lemon.
Nah, buah yang mengandung asam dan vitamin C ini memiliki banyak manfaat, lho! Mengonsumsi buah-buahan yang mengandung asam, dapat meningkatkan daya tahan tubuh. Kemudian, untuk ibu hamil, buah-buahan yang mengandung asam baik dalam membantu penyerapan zat besi dan membantu pembentukan hemoglobin.
Lihatnya aja udah terasa masam di lidah, ya! (Sumber: giphy.com)
Selain itu, pernah nggak, waktu kamu mandi dan lagi sabunan, eh nggak sengaja sabunnya nyiprat ke mulut, terus kejilat? Berbeda dengan lemon yang terasa masam, kalau sabun rasanya pahit, kan? Nah, itu karena sabun mengandung senyawa basa. Senyawa basa mengandung ion OH– dan adanya ion OH– inilah yang menyebabkan sabun rasanya pahit.
Jadi, rasa masam dan rasa pahit ini merupakan salah satu sifat atau ciri dari asam dan basa. Kalau begitu, ada nggak ya, sifat lainnya dari asam dan basa? Tentu ada, dong!
Sifat Asam dan Basa
Asam dan basa memiliki sifat yang berbeda. Sifat atau karakteristik asam dan basa dapat kamu lihat pada infografik berikut.
Seperti yang tadi sudah dibahas, dari segi rasa, asam memiliki rasa yang masam sedangkan basa memiliki rasa yang pahit. Lalu, dari segi pH, asam memiliki pH di bawah 7, sedangkan basa memiliki pH di atas 7. Jika suatu larutan memiliki pH 7 artinya larutan tersebut sifatnya netral ya, guys! Tidak bersifat asam maupun basa.
Kemudian, ciri selanjutnya dapat dilihat dari indikator asam basa yang biasa digunakan yaitu lakmus. Jika suatu larutan bersifat asam, maka ia akan memerahkan lakmus biru. Sementara itu, jika larutannya bersifat basa maka ia akan membirukan lakmus merah. Jangan terbalik, ya! Terakhir, larutan atau senyawa asam bersifat korosif, sedangkan basa bersifat kaustik.
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Cara Membedakan Asam dan Basa
Senyawa asam dapat dengan mudah ditemukan pada buah-buahan, seperti jeruk dan lemon. Selain itu, bisa juga ditemukan pada bahan makanan, seperti cuka. Bahkan, senyawa asam juga banyak digunakan sebagai bahan pengawet makanan lho, misalnya asam benzoat yang dimanfaatkan sebagai pengawet jus buah dan selai. Sedangkan untuk senyawa basa, umumnya dapat ditemukan pada benda yang rasanya pahit, seperti obat atau sabun.
Berarti, kalau mau membedakan asam dan basa, kita harus tahu rasanya masam atau pahit, ya? Eits, nggak gitu ya, guys! Ada cara yang lebih aman untuk membedakan mana yang merupakan senyawa asam dan mana yang merupakan senyawa basa. Salah satunya seperti yang sudah disebutkan di atas tadi, yaitu menggunakan indikator lakmus atau pH meter.
Selain itu, kamu juga bisa menggunakan bahan-bahan alami yang berwarna cerah sebagai indikator untuk mengidentifikasi asam dan basa. Misalnya, bunga sepatu dan bunga kana. Ketika bunga sepatu dan bunga kana ini dimasukan kedalam larutan asam, maka warnanya akan berubah menjadi lebih muda dan terang daripada warna semula. Tapi, jika dimasukan ke dalam larutan basa, maka warnanya akan berubah menjadi lebih gelap dari warna semula.
Kita juga bisa lho, membuat larutan asam dan basa sendiri! Mau tau caranya? Simak pembahasannya berikut, ya!
Membuat Larutan Asam dan Basa
Larutan asam dan basa dapat diperoleh dengan melarutkan asam atau basa secara langsung ke dalam air. Selain itu, larutan ini juga dapat diperoleh melalui reaksi antara senyawa oksida dengan air.
Reaksi antara oksida asam dengan air akan menghasilkan larutan asam, sedangkan reaksi antara oksida basa dengan air akan menghasilkan larutan basa. Larutan basa juga dapat dihasilkan dari reaksi antara logam reaktif dengan air.
Oksida sendiri merupakan senyawa yang terbentuk antara unsur tertentu dengan oksigen. Oksida asam adalah oksida yang berasal dari unsur nonlogam dengan oksigen, misalnya CO2, SO2, P2O5, Cl2O7 dan sebagainya. Oksida asam akan menghasilkan larutan asam jika bereaksi dengan air. Contoh reaksi yang menghasilkan larutan asam bisa kamu lihat pada gambar berikut.
Lanjut, kita bahas larutan basa, ya! Larutan basa dapat dibentuk dengan mereaksikan oksida basa dengan air. Oksida basa adalah oksida yang berasal dari unsur logam dengan oksigen, misalnya Na2O, CaO, Fe2O3, dan sebagainya. Contoh reaksi yang menghasilkan larutan basa bisa kamu lihat pada gambar berikut.
Tapi, perlu diperhatikan, bahwa di antara senyawa oksida, ada yang disebut oksida indiferen, yaitu oksida yang tidak dapat membentuk asam maupun basa, misalnya CO dan NO.
Selain itu, ada juga oksida amfoter. Amfoter artinya dapat bereaksi dengan ion asam (H+) dan ion basa (OH–). Contoh oksida amfoter adalah Al2O3 dan ZnO.
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Klasifikasi Asam dan Basa
Oke, sekarang kita bahas tentang klasifikasi asam dan basa, ya! Asam dan basa dibagi menjadi dua macam, yaitu asam kuat dan basa kuat, serta asam lemah dan basa lemah. Kuat dan lemahnya tuh maksudnya gimana, ya? Yuk, kita bahas satu per satu!
1. Asam Kuat dan Basa Kuat
Asam kuat adalah senyawa asam yang mudah melepaskan ion H+ dalam air dan mengalami disosiasi total dalam larutannya. Contoh asam kuat yaitu HCl, HNO3, H2SO4, dan HCIO4.
Sedangkan basa kuat adalah senyawa basa yang mudah melepaskan ion OH– dalam air dan mengalami disosiasi total dalam larutannya. Contoh basa kuat yaitu NaOH, KOH, dan Ba(OH)2.
2. Asam Lemah dan Basa Lemah
Asam lemah adalah senyawa asam yang sulit melepaskan ion H+ dalam air dan mengalami disosiasi sebagian dalam larutannya. Contoh asam lemah yaitu H3PO4, H2SO3, HNO2, dan CH3COOH.
Basa lemah adalah senyawa basa yang sulit melepaskan ion OH– dalam air dan mengalami disosiasi sebagian dalam larutannya. Contoh basa lemah yaitu NaHCO3 dan NH4OH.
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Itu tadi pembahasan kita tentang asam basa, mulai dari sifat atau cirinya, cara membedekan, hingga klasifikasinya. Gimana? Sudah paham, kan? Kalau kamu belum puas dengan penjelasan pada artikel ini, kamu bisa belajar dengan menggunakan video belajar beranimasi di ruangbelajar! Melalui ruangbelajar, kamu bisa menambah pemahaman kamu tentang materi asam dan basa, tentunya dengan bimbingan tutor yang berpengalaman!
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<h1 class="content-title">
Mengenal Asam Basa: Sifat, Cara Membedakan & Klasifikasinya | Kimia Kelas 11 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kenya-swawikanti" class="">Kenya Swawikanti</a> </p>
<p class="content-info"><span>August 14, 2025 • </span> <span>6 minutes read</span></p>
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<p><span style="color: #000000;"><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Asam%20Basa%20Sifat%2c%20Perbedaan%2c%20dan%20Klasifikasinya.jpg" alt="Asam Basa - Sifat, Perbedaan, dan Klasifikasinya" width="820" /></span></p>
<blockquote>
<p style="text-align: center;"><em><span style="color: #000000;">Pernah mendengar istilah asam basa? Yuk, kita belajar mengenai asam basa, mulai dari sifat-sifat, cara membedakan, dan klasifikasinya di <strong><a href="https://www.ruangguru.com/blog/c/kimia/kimia-sma-kelas-11">artikel Kimia kelas 11</a></strong> ini!</span></em></p>
<p style="text-align: center;"><em><span style="color: #000000;">—</span></em></p>
</blockquote>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Kamu pernah makan lemon, nggak? Ketika dimakan, lemon tuh rasanya ada masam-masamnya gitu, kan? Duh, bayanginnya aja udah terasa nih, rasa masamnya di lidah! </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, kamu tahu nggak sih, lemon itu bisa terasa masam karena lemon mengandung <span style="font-weight: bold;">senyawa asam</span>. Senyawa asam mengandung <span style="font-weight: bold;">ion H<sup>+</sup></span> dan adanya ion H<sup>+</sup> inilah yang membuat lemon rasanya <span style="font-weight: bold;">masam</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Sebagian besar buah-buahan mengandung <a href="/blog/kimia-kelas-12-senyawa-asam-karboksilat" rel="noopener"><span style="font-weight: bold;">asam organik</span></a> lemah, seperti <span style="font-weight: bold;">asam sitrat</span> pada jeruk, <span style="font-weight: bold;">asam maleat</span> pada apel, dan <span style="font-weight: bold;">asam tartrat</span> pada buah anggur. Selain itu, ada pula <span style="font-weight: bold;">asam askorbat</span> yang dikenal sebagai vitamin C yang banyak terdapat dalam buah yang berasa masam seperti buah lemon.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, buah yang mengandung asam dan vitamin C ini memiliki banyak manfaat, lho! Mengonsumsi buah-buahan yang mengandung asam, dapat <span style="font-weight: bold;">meningkatkan daya tahan tubuh</span>. Kemudian, untuk ibu hamil, buah-buahan yang mengandung asam baik dalam membantu <span style="font-weight: bold;">penyerapan zat besi</span> dan membantu <span style="font-weight: bold;">pembentukan hemoglobin</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;"><img fetchpriority="high" decoding="async" style="width: 600px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/giphy%20(1)-1.gif" alt="sifat asam" width="600" height="365" /></span></p>
<p style="text-align: center;"><span style="color: #000000;"><em>Lihatnya aja udah terasa masam di lidah, ya! (Sumber: giphy.com)</em></span></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Selain itu, pernah nggak, waktu kamu mandi dan lagi sabunan, eh nggak sengaja sabunnya nyiprat ke mulut, terus kejilat? Berbeda dengan lemon yang terasa masam, kalau sabun rasanya pahit, kan? Nah, itu karena sabun mengandung <span style="font-weight: bold;">senyawa basa</span>. Senyawa basa mengandung <span style="font-weight: bold;">ion OH<sup>–</sup></span> dan adanya ion OH<sup>–</sup> inilah yang menyebabkan sabun rasanya <span style="font-weight: bold;">pahit</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Jadi, rasa masam dan rasa pahit ini merupakan salah satu sifat atau ciri dari <a href="/blog/apa-itu-titrasi-asam-basa" rel="noopener"><span style="font-weight: bold;">asam dan basa</span></a>. Kalau begitu, ada nggak ya, sifat lainnya dari asam dan basa? Tentu ada, dong!</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Sifat Asam dan Basa</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Asam dan basa memiliki sifat yang berbeda. Sifat atau karakteristik asam dan basa dapat kamu lihat pada infografik berikut.</span></p>
<p style="text-align: justify;"><span style="color: #000000;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Karakteristik%20Asam%20Basa.jpg" alt="Karakteristik Asam Basa" width="600" /></span></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Seperti yang tadi sudah dibahas, dari segi rasa, asam memiliki rasa yang <span style="font-weight: bold;">masam </span>sedangkan basa memiliki rasa yang <span style="font-weight: bold;">pahit</span>. Lalu, dari segi pH, asam memiliki pH <span style="font-weight: bold;">di bawah 7</span>, sedangkan basa memiliki pH <span style="font-weight: bold;">di atas 7</span>. Jika suatu larutan memiliki pH 7 artinya larutan tersebut sifatnya <span style="font-weight: bold;">netral</span> ya, <em>guys</em>! Tidak bersifat asam maupun basa.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Kemudian, ciri selanjutnya dapat dilihat dari <a href="/blog/cara-menentukan-indikator-asam-basa" rel="noopener"><span style="font-weight: bold;">indikator asam basa</span></a> yang biasa digunakan yaitu lakmus. Jika suatu larutan bersifat asam, maka ia akan <span style="font-weight: bold;">memerahkan lakmus biru</span>. Sementara itu, jika larutannya bersifat basa maka ia akan <span style="font-weight: bold;">membirukan lakmus merah</span>. Jangan terbalik, ya! Terakhir, larutan atau senyawa asam bersifat <span style="font-weight: bold;">korosif</span>, sedangkan basa bersifat <span style="font-weight: bold;">kaustik</span>.</span></p>
<p style="text-align: justify; font-weight: bold;"><span style="color: #000000;">Baca Juga:</span> <a href="/blog/isomer" rel="noopener">Pengertian Isomer, Jenis, serta Contohnya</a><span style="color: #000000;"> </span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Cara Membedakan Asam dan Basa</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Senyawa asam dapat dengan mudah ditemukan pada <a href="/blog/kimia-kelas-11-apa-yang-menyebabkan-buah-bisa-matang" rel="noopener"><span style="font-weight: bold;">buah-buahan</span></a>, seperti <span style="font-weight: bold;">jeruk dan lemon</span>. Selain itu, bisa juga ditemukan pada bahan makanan, seperti <span style="font-weight: bold;">cuka</span>. Bahkan, senyawa asam juga banyak digunakan sebagai bahan pengawet makanan lho, misalnya <span style="font-weight: bold;">asam benzoat</span> yang dimanfaatkan sebagai <span style="font-weight: bold;">pengawet jus buah dan selai</span>. Sedangkan untuk senyawa basa, umumnya dapat ditemukan pada benda yang rasanya pahit, seperti obat atau sabun. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Berarti, kalau mau membedakan asam dan basa, kita harus tahu rasanya masam atau pahit, ya? Eits, nggak gitu ya, <em>guys</em>! Ada cara yang lebih aman untuk membedakan mana yang merupakan senyawa asam dan mana yang merupakan senyawa basa. Salah satunya seperti yang sudah disebutkan di atas tadi, yaitu menggunakan <span style="font-weight: bold;">indikator lakmus </span><span style="font-weight: normal;">atau</span><span style="font-weight: bold;"> pH meter</span><span style="font-weight: normal;">.</span></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Selain itu, kamu juga bisa menggunakan <span style="font-weight: bold;">bahan-bahan alami</span> <span style="font-weight: bold;">yang berwarna cerah</span> sebagai indikator untuk mengidentifikasi asam dan basa. Misalnya, <span style="font-weight: bold;">bunga sepatu </span><span style="font-weight: normal;">dan</span><span style="font-weight: bold;"> bunga kana</span>. Ketika bunga sepatu dan bunga kana ini dimasukan kedalam larutan <span style="font-weight: bold;">asam</span>, maka warnanya akan berubah menjadi <span style="font-weight: bold;">lebih muda dan terang</span> daripada warna semula. Tapi, jika dimasukan ke dalam larutan <span style="font-weight: bold;">basa</span>, maka warnanya akan berubah menjadi <span style="font-weight: bold;">lebih gelap</span> dari warna semula.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Kita juga bisa lho, membuat larutan asam dan basa sendiri! Mau tau caranya? Simak pembahasannya berikut, ya!</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Membuat Larutan Asam dan Basa</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Larutan asam dan basa dapat diperoleh dengan <span style="font-weight: bold;">melarutkan asam atau basa secara langsung ke dalam air</span>. Selain itu, larutan ini juga dapat diperoleh melalui <span style="font-weight: bold;">reaksi antara senyawa oksida dengan air</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: normal;">Reaksi antara</span><strong> oksida asam dengan air </strong><span style="font-weight: normal;">akan menghasilkan</span><strong> larutan asam</strong><span style="font-weight: normal;">, sedangkan reaksi antara</span><strong> oksida basa dengan air </strong><span style="font-weight: normal;">akan menghasilkan</span><strong> larutan basa</strong>. Larutan basa juga dapat dihasilkan dari reaksi antara <span style="font-weight: normal;">logam reaktif dengan air</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: normal;"><span style="font-weight: bold;">Oksida</span> sendiri merupakan</span> <span style="font-weight: normal;">senyawa yang terbentuk antara unsur tertentu dengan oksigen</span>. <span style="font-weight: bold;">Oksida asam</span> adalah oksida yang berasal dari unsur <span style="font-weight: bold;">nonlogam</span> dengan <span style="font-weight: bold;">oksigen</span>, misalnya <strong>CO<sub>2</sub>, SO<sub>2</sub>, P<sub>2</sub>O<sub>5</sub>, Cl<sub>2</sub>O<sub>7</sub></strong> dan sebagainya. Oksida asam akan menghasilkan larutan asam jika bereaksi dengan air. <span style="font-weight: bold;">Contoh reaksi</span> yang menghasilkan <span style="font-weight: bold;"><a href="/blog/memahami-larutan-elektrolit-dan-non-elektrolit" rel="noopener">larutan</a> asam</span> bisa kamu lihat pada gambar berikut.</span></p>
<p><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Contoh%20Reaksi%20Larutan%20Asam.jpg" alt="Contoh Reaksi Larutan Asam" width="600" /></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;"><span style="font-weight: normal;">Lanjut, kita bahas larutan basa, ya! Larutan basa dapat dibentuk dengan mereaksikan oksida basa dengan air. <span style="font-weight: bold;">Oksida basa</span> adalah oksida yang berasal dari unsur <span style="font-weight: bold;">logam</span> dengan <span style="font-weight: bold;">oksigen</span></span>, misalnya <strong>Na<sub>2</sub>O, </strong><strong>CaO, Fe<sub>2</sub>O<sub>3</sub></strong>, dan sebagainya. <span style="font-weight: bold;">Contoh reaksi</span> yang menghasilkan <span style="font-weight: bold;">larutan basa</span> bisa kamu lihat pada gambar berikut.</span></p>
<p><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Contoh%20Reaksi%20Larutan%20Basa.jpg" alt="Contoh Reaksi Larutan Basa" width="600" /></p>
<p> </p>
<p><span style="color: #000000;">Tapi, perlu diperhatikan, bahwa di antara senyawa oksida, ada yang disebut <span style="font-weight: bold;">oksida indiferen</span>, yaitu oksida yang <span style="font-weight: bold;">tidak dapat membentuk asam maupun basa</span>, misalnya <span style="font-weight: bold;">CO </span><span style="font-weight: normal;">dan </span><span style="font-weight: bold;">NO</span>. </span></p>
<p><span style="color: #000000;">Selain itu, ada juga <span style="font-weight: bold;">oksida amfoter</span>. Amfoter artinya dapat bereaksi dengan ion asam (H<sup>+</sup>) dan ion basa (OH<sup>–</sup>). Contoh oksida amfoter adalah <span style="font-weight: bold;">Al<sub>2</sub>O<sub>3</sub> </span>dan <span style="font-weight: bold;">ZnO</span>.</span></p>
<p style="font-weight: bold;"><span style="color: #000000;">Baca Juga: <a href="/blog/sifat-koloid-dan-cara-pembuatannya" rel="noopener">Sifat-Sifat Koloid dan Cara Pembuatannya</a></span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Klasifikasi Asam dan Basa</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Oke, sekarang kita bahas tentang klasifikasi asam dan basa, ya! Asam dan basa dibagi menjadi dua macam, yaitu <span style="font-weight: bold;">asam kuat dan basa kuat</span>, serta <span style="font-weight: bold;">asam lemah dan basa lemah</span>. Kuat dan lemahnya tuh maksudnya gimana, ya? Yuk, kita bahas satu per satu!</span></p>
<p> </p>
<h3 style="font-weight: bold; font-size: 16px;"><span style="color: #000000; font-size: 14pt;">1. Asam Kuat dan Basa Kuat</span></h3>
<p style="text-align: justify;"><span style="color: #000000;">Asam kuat adalah senyawa asam yang <span style="font-weight: bold;">mudah melepaskan ion H<sup>+</sup></span> dalam air dan <span style="font-weight: bold;">mengalami disosiasi total</span> dalam larutannya. Contoh asam kuat yaitu <span style="font-weight: bold;">HCl, HNO<sub>3</sub>, H<sub>2</sub>SO<sub>4</sub>, </span><span style="font-weight: normal;">dan </span><span style="font-weight: bold;">HCIO<sub>4</sub></span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Sedangkan basa kuat adalah senyawa basa yang <span style="font-weight: bold;">mudah melepaskan ion OH<sup>–</sup></span> dalam air dan <span style="font-weight: bold;">mengalami</span> <span style="font-weight: bold;">disosiasi total</span> dalam larutannya. Contoh basa kuat yaitu <span style="font-weight: bold;">NaOH, KOH, </span><span style="font-weight: normal;">dan </span><span style="font-weight: bold;">Ba(OH)<sub>2</sub></span>.</span></p>
<p> </p>
<h3 style="font-weight: bold; font-size: 16px;"><span style="color: #000000; font-size: 14pt;">2. Asam Lemah dan Basa Lemah</span></h3>
<p style="text-align: justify;"><span style="color: #000000;">Asam lemah adalah senyawa asam yang <span style="font-weight: bold;">sulit melepaskan ion H<sup>+</sup></span> dalam air dan <span style="font-weight: bold;">mengalami disosiasi sebagian</span> dalam larutannya. Contoh asam lemah yaitu <span style="font-weight: bold;">H<sub>3</sub>PO<sub>4</sub>, H<sub>2</sub>SO<sub>3</sub>, HNO<sub>2</sub>, </span><span style="font-weight: normal;">dan </span><span style="font-weight: bold;">CH<sub>3</sub>COOH</span>. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Basa lemah adalah senyawa basa yang <span style="font-weight: bold;">sulit melepaskan ion OH<sup>–</sup></span> dalam air dan <span style="font-weight: bold;">mengalami disosiasi sebagian</span> dalam larutannya. Contoh basa lemah yaitu <span style="font-weight: bold;">NaHCO<sub>3</sub></span> dan <span style="font-weight: bold;">NH<sub>4</sub>OH</span>.</span></p>
<p style="text-align: center;">—</p>
<p style="text-align: justify;"><span style="color: #000000;">Itu tadi pembahasan kita </span><span style="background-color: transparent; color: #000000;">tentang asam basa, mulai dari </span><span style="font-weight: normal;">sifat atau cirinya, cara membedekan, hingga klasifikasinya. </span><span style="color: #000000;">Gimana? Sudah paham, kan? Kalau kamu belum puas dengan penjelasan pada artikel ini, kamu bisa belajar dengan menggunakan <span style="font-weight: normal;">video belajar beranimasi di </span><a href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener"><strong>ruangbelajar</strong></a><span style="font-weight: normal;">!</span> Melalui <span style="font-weight: normal;">ruangbelajar,</span> kamu bisa menambah pemahaman kamu tentang materi asam dan basa, tentunya dengan bimbingan tutor yang berpengalaman!</span></p>
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</nav>
</div>
</div>
</div>
</div>
<div class="d-lg-none text-center">
<nav class="footer-menu social">
<p class="title">Ikuti Kami</p>
<a target="_blank" href="https://www.instagram.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/instagram.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/instagram.png" loading="lazy" alt="Logo Instagram Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.facebook.com/ruanggurucom/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/facebook.png" loading="lazy" alt="Logo Facebook Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://twitter.com/ruangguru/">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60&convert=webp" type="image/webp">
<source srcset="https://cdn-web-2.ruangguru.com/static/twitter.png?height=60" type="image/png">
<img src="https://cdn-web-2.ruangguru.com/static/twitter.png" loading=" lazy" alt="Logo Twitter Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.youtube.com/ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/youtube.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/youtube.png" loading=" lazy" alt="Logo Youtube Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.linkedin.com/company/ruangguru-com">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60&convert=webp" type="image/webp">
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<img src="https://cdn-web-2.ruangguru.com/static/linkedin.png" loading=" lazy" alt="Logo LinkedIn Footer" width="32px" height="32px" />
</picture>
</a>
<a target="_blank" href="https://www.tiktok.com/@ruangguru">
<picture>
<source srcset="https://cdn-web-2.ruangguru.com/static/tiktok.png?height=60&convert=webp" type="image/webp">
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</picture>
</a>
</nav>
</div>
<p class="footer-copyright">
© 2026 All Rights Reserved PT. Ruang Raya Indonesia
</p>
</div>
<style>
.bantuan-container {
position: relative;
}
.bantuan-element {
position: fixed;
z-index: 999;
display: flex;
align-items: flex-end;
justify-content: flex-end;
cursor: pointer;
transition: all 0.6s ease;
}
.bantuan-top {
bottom: 11rem;
right: 2rem;
}
.bantuan-bottom {
bottom: 2rem;
right: 2rem;
}
.bantuan-top-2 {
bottom: 15rem;
right: 2rem;
}
.bantuan-top-3 {
bottom: 19rem;
right: 2rem;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 2rem;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 2rem;
}
@media (min-width: 768px) {
.bantuan-element img {
width: auto;
transition: all 0.4s ease;
}
.bantuan-top img {
width: 140px;
}
.bantuan-bottom img {
width: 140px;
}
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 140px;
}
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 140px;
}
.bantuan-element.clicked {
bottom: 9rem;
right: 2.5rem;
}
.bantuan-element.clicked img {
width: auto;
height: 64px;
}
}
@media (max-width: 767px) {
.bantuan-top {
bottom: 8rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom {
bottom: 2rem;
right: 1.25rem;
align-items: center;
}
.bantuan-top-2 {
bottom: 12rem;
right: 1rem;
align-items: center;
}
.bantuan-top-3 {
bottom: 16rem;
right: 1rem;
align-items: center;
}
.bantuan-bottom-2 {
bottom: 5rem;
right: 1.25rem;
align-items: center;
}
.bantuan-bottom-3 {
bottom: 8rem;
right: 1.25rem;
align-items: center;
}
.bantuan-element img {
width: auto;
}
.bantuan-top img,
.bantuan-top-2 img,
.bantuan-top-3 img {
width: 96px;
}
.bantuan-bottom img,
.bantuan-bottom-2 img,
.bantuan-bottom-3 img {
width: 96px;
}
}
.bantuan-element:hover {
transform: scale(1.05);
}
.bantuan-element img {
max-width: 100%;
height: auto;
}
</style>
<div id="bantuan-divs-container" style="position: relative" data-product="ruangguru" data-table="rg_floating_icon"></div>
<script>
class FloatingDivsComponent {
constructor(product = 'ruangguru', table = 'rg_floating_icon') {
this.container = document.getElementById('bantuan-divs-container');
this.floatingElements = [];
this.product = product;
this.table = table;
// Configuration
this.config = {
baseApiUrl: 'https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/rg_banner/views/',
apiKey: 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
maxElements: 2,
zIndexBase: 100,
};
// Build dynamic API URL based on table parameter
this.config.apiUrl = this.buildApiUrl();
this.init();
}
buildApiUrl() {
const baseUrl = this.config.baseApiUrl;
const tableName = this.table || 'rg_floating_icon';
const queryParams =
'offset=0&limit=99999&sort=rankPosition&where=(type,eq,floating)~and(showIn,anyof,blog)~and(hide,is,false)~and(product,eq,' +
this.product +
')&nested%5Bcta%5D%5Bfields%5D=Id,name,ctaId,imageUrl,ctaLink,targetUrl';
return `${baseUrl}${tableName}?${queryParams}`;
}
async init() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to initialize floating divs component:', error);
}
}
async fetchFloatingElements() {
try {
const options = {
method: 'GET',
headers: {
'xc-token': this.config.apiKey || 'vLyK3dJrDBRmOwueX2OJXibMkgsUbBk0WS4ua2p1',
},
};
const urlNoco = this.config.apiUrl;
const response = await fetch(urlNoco, options);
if (!response.ok) {
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
this.floatingElements = this.processApiResponse(data);
} catch (error) {
console.error('Error fetching floating elements:', error);
throw error;
}
}
processApiResponse(data) {
if (!data || !data.list || !Array.isArray(data.list)) {
return [];
}
console.log(data.list);
// Ensure we only get maximum 2 elements
const limitedElements = data.list.slice(0, this.config.maxElements);
return limitedElements;
}
renderFloatingElements() {
if (!this.container || this.floatingElements.length === 0) {
return;
}
// Additional safeguard: ensure we never render more than maxElements
const elementsToRender = this.floatingElements.slice(0, this.config.maxElements);
// Clean up existing elements and their event listeners
this.cleanupExistingElements();
// Clear existing content
this.container.innerHTML = '';
elementsToRender.forEach((element, index) => {
const floatingDiv = this.createFloatingDiv(element, index);
this.container.appendChild(floatingDiv);
});
}
cleanupExistingElements() {
// Clear existing elements (no need for event listener cleanup with CSS approach)
const existingElements = this.container.querySelectorAll('[data-floating-element]');
existingElements.forEach(element => {
element.remove();
});
}
createFloatingDiv(element, index) {
const div = document.createElement('div');
const cta = element.cta[0]; // Use the first CTA
// Add data attribute for cleanup tracking
div.setAttribute('data-floating-element', 'true');
// Apply CSS classes based on rankPosition
const positionClass = this.getPositionClass(element.rankPosition, index);
div.className = `bantuan-element ${positionClass}`;
div.style.zIndex = this.config.zIndexBase + index;
// Create the link and image
const link = document.createElement('a');
link.href = 'https://cta.ruangguru.com/' + cta.ctaId || '#';
link.target = '_blank';
// Add tracking attributes
link.setAttribute('data-tracking-event-type', 'landing_page__core__item_click');
link.setAttribute(
'data-tracking-context',
JSON.stringify({
product_name: this.product,
cta_action: 'redirection',
cta_action_detail: link.href,
item_type: 'floating',
item_name: element.name || 'Floating element',
item_category: 'payment',
item_position: index,
item_serial: null,
section_type: 'floating_item',
section_position: 'body',
section_name: 'floating_item',
})
);
const img = document.createElement('img');
img.src = element.imageUrl + '?h=200&convert=webp';
img.alt = element.name || 'Floating element';
img.loading = 'lazy';
// Add click tracking
link.addEventListener('click', () => {
this.trackClick(element, cta);
});
link.appendChild(img);
div.appendChild(link);
return div;
}
getPositionClass(rankPosition, index) {
// Define positioning classes based on rankPosition
if (rankPosition === 1) {
return 'bantuan-top'; // Top position
} else if (rankPosition === 2) {
return 'bantuan-bottom'; // Bottom position
} else {
// For additional elements, distribute them evenly
return `bantuan-${index % 2 === 0 ? 'top' : 'bottom'}-${Math.floor(index / 2) + 1}`;
}
}
trackClick(element, cta) {
// Implement click tracking logic here
console.log('Floating element clicked:', {
elementId: element.Id,
elementName: cta.name,
ctaId: cta.ctaId,
targetUrl: cta.targetUrl,
});
}
// Public method to manually refresh
async refresh() {
try {
await this.fetchFloatingElements();
this.renderFloatingElements();
} catch (error) {
console.error('Failed to refresh floating elements:', error);
throw error;
}
}
// Public method to get current floating elements
getFloatingElements() {
return [...this.floatingElements];
}
}
// Initialize the component when DOM is ready
document.addEventListener('DOMContentLoaded', () => {
// Get product and table parameters from data attributes
const container = document.getElementById('bantuan-divs-container');
const product = container.getAttribute('data-product') || 'ruangguru';
const table = container.getAttribute('data-table') || 'rg_floating_icon';
new FloatingDivsComponent(product, table);
});
// Export for use in other modules if needed
if (typeof module !== 'undefined' && module.exports) {
module.exports = FloatingDivsComponent;
}
</script> <div id="wp-install-nudge" style="
position: fixed;
bottom: 0rem;
right: 0;
z-index: 999;
cursor: pointer;
"></div>
<script>
(function (w, d, s, o, f, js, fjs) {
w['Sales-Nudge-Widget'] = o; w[o] = w[o] || function () { (w[o].q = w[o].q || []).push(arguments) };
js = d.createElement(s), fjs = d.getElementsByTagName(s)[0];
js.id = o; js.src = f; js.async = 1; fjs.parentNode.insertBefore(js, fjs);
}(window, document, 'script', 'wpInstallNudge', 'https://cdn-web-2.ruangguru.com/sales-nudge/6198a95130/dist/widget.js'));
wpInstallNudge('init', { targetElementId: 'wp-install-nudge', clientTarget: 'ruangguru_blog' });
</script>
<script>
// note: disabled due to auto reload page
// var lastScrollTop = 0;
// $(window).scroll(function(event){
// var st = $(this).scrollTop();
// if (st > lastScrollTop){
// $('#wp-install-nudge').slideDown( "slow", function() {});
// } else {
// $('#wp-install-nudge').slideUp( "slow", function() {});
// }
// lastScrollTop = st;
// });
// $(document).ready(function () {
// $("#wp-install-nudge").hide();
// });
$('#wp-install-nudge').click(function(){
Analytics.track("promotion__install_nudge__click",
{
user_email: "ruangguru@blog.com",
cta_link: widgetData.dataConfig.target_link
}).catch((err) => {
console.log("tracker error", err);
});
});
</script>
</footer>
<div id="__next"></div>
<script type="speculationrules">
{"prefetch":[{"source":"document","where":{"and":[{"href_matches":"\/blog\/*"},{"not":{"href_matches":["\/blog\/wp-*.php","\/blog\/wp-admin\/*","\/blog\/wp-content\/uploads\/*","\/blog\/wp-content\/*","\/blog\/wp-content\/plugins\/*","\/blog\/wp-content\/themes\/ruangguru\/*","\/blog\/*\\?(.+)"]}},{"not":{"selector_matches":"a[rel~=\"nofollow\"]"}},{"not":{"selector_matches":".no-prefetch, .no-prefetch a"}}]},"eagerness":"conservative"}]}
</script>
<script>
async function getCtaDetails(ctaIds) {
const endpoint =
" https://gw.ruangguru.com/api/v3/rdb/p_ddgy8hjx5dxsqx/CTA/views/CTA?offset=0&limit=10&where=(ctaId,in," + ctaIds.toString() + ")";
try {
const response = await fetch(endpoint, {
headers: {
"xc-token": "-hG2nBDJzSj0agSgNtcJx97M4F02y54nUMoY6plJ",
},
});
const data = await response.json();
const ctaList = data?.list || [];
const ctaMap = new Map();
for (const ctaData of ctaList) {
ctaMap.set(ctaData.ctaId, ctaData);
}
return ctaMap;
} catch (error) {
console.error("Error fetching CTA details:", error);
return new Map();
}
}
async function replaceCTA() {
const regex = /{{cta\((‘(.*?)’|“(.*?)”)\)}}/g;
const bodyHTML = document.body.innerHTML;
const matches = Array.from(bodyHTML.matchAll(regex));
const ctaIds = matches.map((match) => {
let ctaId = match[2] ?? match[3];
return ctaId;
});
const ctaMap = await getCtaDetails(ctaIds);
const replacedHTML = bodyHTML.replace(regex, (match, _inner, ctaId1, ctaId2) => {
const ctaId = ctaId1 ?? ctaId2;
const ctaData = ctaMap.get(ctaId);
if (ctaData) {
return `<a href="https://cta.ruangguru.com/${ctaData.ctaId}" target="_${ctaData.targetType}" style="position:relative;display:inline-block;">
<img src="${ctaData.imageUrl}" loading="lazy" alt="${ctaData.altText}" />
</a>`;
} else {
return match;
}
});
document.body.innerHTML = replacedHTML;
}
</script>
<meta name="author" content="Ruangguru Tech Team">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-PVNLZFT" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- Tracker -->
<script type="text/javascript" src="https://cdn-web-2.ruangguru.com/landing-page-web/public/staticpages/global-assets/js/cta.js"></script>
<script src="https://unpkg.com/@dotlottie/player-component@latest/dist/dotlottie-player.mjs" type="module"></script>
</body>
</html>