Yuk, pelajari tentang larutan penyangga, mulai dari pengertian, fungsi, jenis-jenis, cara kerja, serta contoh persamaan reaksinya di artikel Kimia kelas 11 ini!
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Pernah nggak, kamu makan pempek, lalu sesaat kemudian merasakan perih di bagian perut? Hal itu karena di dalam kuah pempek terdapat cuka yang mengandung asam asetat.
Hmm, asam? Bukannya asam itu bersifat korosif?
Memang betul. Makanya, bersyukurlah kamu karena di dalam tubuh kita ada larutan penyangga yang bisa menyelamatkan kita dari sifat korosif asam maupun basa.
Hah? Penyangga? Apa yang disangga?
Hehe, bukan, ini bukan buat nyangga pintu biar nggak ketutup sendiri gitu. Tapi, larutan ini menyangga pH supaya tidak berubah dan tetap stabil.
Baca Juga: Jenis-Jenis, Persamaan Reaksi, dan Tetapan Kesetimbangan Kimia
Pengertian dan Fungsi Larutan Penyangga
Larutan penyangga atau sering disebut juga dengan larutan buffer adalah larutan yang dapat menstabilkan pH meskipun diberikan sedikit asam, sedikit basa, ataupun diencerkan.
Larutan penyangga ini banyak diberikan di tempat-tempat yang “rentan” berubah pH-nya, misalnya kolam renang. Kolam renang yang baik biasanya mencampurkan larutan penyangga ke dalam air kolamnya, agar pH air kolam bisa stabil dan tidak merusak kulit.
Selain itu, larutan penyangga juga terdapat di dalam soda untuk mencegah rasa asam yang melukai gigi dan jaringan di mulut. Bahkan, di dalam tubuh kita, tepatnya di dalam cairan lambung, juga terdapat larutan penyangga, lho! Fungsinya adalah untuk mempertahankan pH lambung agar tetap stabil meskipun di dalam lambung terdapat makanan atau minuman yang mengandung asam atau basa.
Misalnya, kamu memakan makanan yang asam kayak… ketek. Oke, ganti contoh lain. Misalnya, jeruk. Dengan memakan jeruk yang mengandung asam sitrat, nantinya pH lambung kita akan berubah. Nah, larutan penyangga yang ada di dalam cairan lambung, akan “mencegah” hal ini.
Efek makan makanan asam (Sumber: metro.co.uk)
Hmm, mungkin kamu belum bisa membayangkan seperti apa larutan penyangga itu, ya? Oke, coba aku jelasin lagi ya. Kita ambil contoh cairan lambung tadi. Di dalam cairan lambung ini, yang bertindak sebagai larutan penyangga ternyata sangat kompleks, lho. Salah satu contohnya adalah campuran ion bikarbonat (HCO3–) dan ion karbonat (CO32-).
Campuran ini dapat mencegah perubahan pH yang drastis pada lambung, sehingga mencegah kerusakan lambung akibat pH makanan yang berubah-ubah. Misalkan ketika kita makan pempek tadi. Meskipun lambung kita kemasukan cuka yang bersifat asam, tapi lambung tetap aman, kan? Hal ini karena larutan penyangga dalam lambung kita dapat mengatasinya.
Selain di lambung, larutan penyangga ada juga di dalam darah, lho! Di dalam darah, larutan penyangga ini ada dalam bentuk H2CO3 dan HCO3–.
Baca Juga: Laju Reaksi dan Faktor-Faktor yang Memengaruhinya
Larutan penyangga ada jenis-jenisnya, lho! Apa aja sih, jenis-jenis larutan penyangga? Yuk, kita bahas!
Jenis-Jenis Larutan Penyangga
Ada dua jenis larutan penyangga, yaitu larutan penyangga asam dan larutan penyangga basa. Larutan penyangga asam tersusun atas asam lemah dan basa konjugasinya.
Contohnya adalah yang ada di dalam lambung tadi, yaitu campuran ion bikarbonat (HCO3–) yang berperan sebagai asam lemah dan ion karbonat (CO32–) yang berperan sebagai basa konjugasinya.
Jenis yang kedua, yaitu larutan penyangga basa. Larutan penyangga basa terdiri atas basa lemah dan asam konjugasinya. Contohnya adalah campuran dari ammonia (NH3) yang bertindak sebagai basa lemah dan ammonium (NH4+) yang bertindak sebagai asam konjugasinya.
Lalu bagaimana cara kerja dari larutan penyangga dalam menstabilkan pH?
Cara Kerja Larutan Penyangga
Jadi gini, cara kerja dari larutan penyangga adalah melalui reaksi dengan spesi (zat) penyusun larutan penyangga.
Misalkan larutan penyangga dari HCO3– dan CO32– yang ada dalam lambung kita. Saat kita makan makanan asam, secara kimiawi, akan banyak ion H+ yang masuk ke dalam tubuh. Masuknya H+ ini yang membuat pH darah di tubuh kita menjadi turun (asam). Beruntung kita punya larutan penyangga di dalam lambung yang mampu mengikat H+ sehingga pH darah kita kembali stabil.
Adapun reaksi kimia yang terjadi adalah antara salah satu penyusun larutan penyangga, yaitu CO32–dengan H+ dari asam, dengan persamaan reaksi sebagai berikut:
Lalu bagaimana kalau kita mengonsumsi makanan atau minuman yang mengandung basa? Hal ini tentu akan meningkatkan pH lambung dan membuatnya menjadi basa, dong.
Eits, tapi jangan takut! Masuknya ion OH– dari makanan atau minuman yang bersifat basa tadi juga akan ditangkap oleh salah satu penyusun penyangga kok, yaitu HCO3–. Reaksi kimianya bisa kamu lihat pada gambar di atas, ya!
Baca Juga: Mempelajari Konsep Reaksi Redoks (Reduksi-Oksidasi)
Nah, kamu tahu nggak kenapa yang bertugas menangkap H+ itu CO32– sementara yang menangkap OH– itu HCO3– ? Coba ingat-ingat lagi sifat dari kedua zat penyusun penyangga tadi, deh!
Penyusun penyangga yang bereaksi dengan ion H+ selalu bersifat basa, yaitu ion CO32– yang merupakan basa konjugasi. Sedangkan yang bereaksi dengan OH– adalah penyusun penyangga yang bersifat asam, yaitu H2CO3.
Selain penyangga yang ada di darah, di dalam sel di tubuh kita juga ada larutan penyangganya, lho! Adapun larutan penyangganya adalah H2PO4– (asam) dan HPO42- (basa konjugasi).
Apabila ada ion H+ berlebih yang masuk ke dalam sel, maka akan diikat oleh penyusun penyangga basa konjugasi (HPO42-). Sebaliknya, apabila terdapat senyawa basa berlebih di dalam cairan intrasel, maka akan ditangkap oleh penyusun penyangga berupa asamnya, yaitu H2PO4–.
—
Itu dia pembahasan kita tentang larutan penyangga, mulai dari pengertian, fungsi, jenis-jenis, cara kerja, serta contoh persamaan reaksinya. Ternyata, larutan penyangga ini punya peranan yang cukup vital bagi kita, ya! Kalau kamu ingin mempelajari materi seperti ini sambil menonton video animasi lengkap dengan infografik menarik dan latihan soal, coba aja tonton di ruangbelajar!
Sumber Gambar:
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<h1 class="content-title">
Pengertian Larutan Penyangga, Bisakah Menstabilkan pH? | Kimia Kelas 11 </h1>
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<p class="content-author"><a href="https://www.ruangguru.com/blog/author/kresnoadi" class="">Kresnoadi</a> </p>
<p class="content-info"><span>August 6, 2025 • </span> <span>5 minutes read</span></p>
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<p style="text-align: justify;"><img decoding="async" style="width: 820px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Larutan%20Penyangga.jpg" alt="Larutan Penyangga" width="820" /></p>
<blockquote>
<p style="text-align: center;"><span style="color: #000000;"><em>Yuk, pelajari tentang larutan penyangga, mulai dari pengertian, fungsi, jenis-jenis, cara kerja, serta contoh persamaan reaksinya di <strong><a href="https://www.ruangguru.com/blog/c/kimia/kimia-sma-kelas-11">artikel Kimia kelas 11</a></strong> ini!</em></span></p>
<p style="text-align: center;"><span style="color: #000000;"><em>—</em></span></p>
</blockquote>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Pernah nggak, kamu makan pempek, lalu sesaat kemudian merasakan perih di bagian perut? Hal itu karena di dalam kuah pempek terdapat cuka yang mengandung asam asetat. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Hmm, asam? Bukannya asam itu bersifat korosif? </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Memang betul. Makanya, bersyukurlah kamu karena di dalam tubuh kita ada <span style="font-weight: bold;">larutan penyangga</span> yang bisa menyelamatkan kita dari sifat korosif asam maupun basa. </span></p>
<p style="text-align: justify;"><span style="background-color: transparent; color: #000000;">Hah? Penyangga? Apa yang disangga? </span></p>
<p style="text-align: justify;"><span style="background-color: transparent; color: #000000;">Hehe, bukan, ini bukan buat nyangga pintu biar nggak ketutup sendiri gitu. Tapi, larutan ini <strong>menyangga pH supaya tidak berubah dan tetap stabil</strong><span style="font-weight: normal;">.</span> </span></p>
<p><strong>Baca Juga: <a href="/blog/kesetimbangan-kimia-jenis-jenis-reaksi-dan-tetapan" rel="noopener">Jenis-Jenis, Persamaan Reaksi, dan Tetapan Kesetimbangan Kimia</a></strong></p>
<p> </p>
<h2><span style="font-size: 18pt;">Pengertian dan Fungsi Larutan Penyangga</span></h2>
<p style="text-align: justify;"><span style="color: #000000;"><span style="background-color: transparent;"><span style="font-weight: bold;">Larutan penyangga</span> atau </span><span style="background-color: transparent;">sering disebut juga dengan <span style="font-weight: normal;"><span style="font-weight: bold;">larutan buffer adalah</span> larutan yang dapat <span style="font-weight: bold;">menstabilkan pH</span> meskipun diberikan sedikit <span style="font-weight: bold;">asam</span>, sedikit <span style="font-weight: bold;">basa</span>, ataupun <span style="font-weight: bold;">diencerkan</span>.</span></span></span></p>
<p style="text-align: justify;"><span style="color: #000000;">Larutan penyangga ini banyak diberikan di tempat-tempat yang “rentan” berubah pH-nya, misalnya <span style="font-weight: bold;">kolam renang</span>. Kolam renang yang baik biasanya mencampurkan larutan penyangga ke dalam air kolamnya, agar pH air kolam bisa stabil dan tidak merusak kulit.</span></p>
<p style="text-align: justify;"><img decoding="async" style="width: 600px; margin-left: auto; margin-right: auto; display: block;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/Fakta%20Larutan%20Penyangga.jpg" alt="Fakta Larutan Penyangga" width="600" /></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Selain itu, larutan penyangga juga terdapat <span style="font-weight: bold;">di dalam soda</span> untuk mencegah rasa asam yang melukai gigi dan jaringan di mulut. Bahkan, <span style="font-weight: bold;">di dalam tubuh </span><span style="font-weight: normal;">kita</span>, tepatnya <span style="font-weight: bold;">di dalam cairan lambung</span>, juga terdapat larutan penyangga, lho! Fungsinya adalah untuk <span style="font-weight: bold;">mempertahankan pH lambung agar tetap stabil</span> meskipun di dalam lambung terdapat makanan atau minuman yang mengandung </span><strong><a href="/blog/mengenal-sifat-dan-klasifikasi-asam-basa" rel="noopener">asam atau basa</a></strong><span style="color: #000000;">.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Misalnya, kamu memakan makanan yang asam kayak… ketek. Oke, ganti contoh lain. Misalnya, <span style="font-weight: bold;">jeruk</span>. Dengan memakan jeruk yang mengandung <span style="font-weight: bold;">asam sitrat</span>, nantinya pH lambung kita akan berubah. Nah<em>, </em>larutan penyangga yang ada di dalam cairan lambung, akan “mencegah” hal ini.</span></p>
<p><img decoding="async" style="width: 460px; display: block; margin-left: auto; margin-right: auto;" src="https://cdn-web.ruangguru.com/landing-pages/assets/hs/makan%20makanan%20asam.gif" alt="makan makanan asam" width="460" /></p>
<p style="text-align: center;"><span style="color: #000000;">Efek makan makanan asam (Sumber: metro.co.uk)</span></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Hmm, mungkin kamu belum bisa membayangkan seperti apa larutan penyangga itu, ya? Oke, coba aku jelasin lagi ya. Kita ambil contoh cairan lambung tadi. Di dalam cairan lambung ini, yang bertindak sebagai larutan penyangga ternyata sangat kompleks, lho. Salah satu contohnya adalah campuran <span style="font-weight: bold;">ion bikarbonat (HCO<sub>3</sub><sup>–</sup>)</span> dan <span style="font-weight: bold;">ion karbonat (CO<sub>3</sub><sup>2-</sup>)</span>. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Campuran ini dapat <span style="font-weight: bold;">mencegah perubahan pH yang drastis pada lambung</span>, sehingga <span style="font-weight: bold;">mencegah kerusakan lambung akibat pH makanan yang berubah-ubah</span>. Misalkan ketika kita makan pempek tadi. Meskipun lambung kita kemasukan cuka yang bersifat asam, tapi lambung tetap aman, kan? Hal ini karena <span style="font-weight: bold;">larutan penyangga dalam lambung kita dapat mengatasinya</span>.</span></p>
<p>Selain di lambung, larutan penyangga ada juga di dalam <span style="font-weight: bold;">darah</span>, lho! <span style="font-weight: normal;">Di dalam darah, larutan penyangga ini ada dalam bentuk</span><strong> H<sub>2</sub>CO<sub>3</sub> dan HCO<sub>3</sub><sup>–</sup></strong>.</p>
<p><strong>Baca Juga: <a href="/blog/pengertian-dan-faktor-yang-memengaruhi-laju-reaksi" rel="noopener">Laju Reaksi dan Faktor-Faktor yang Memengaruhinya</a></strong></p>
<p style="text-align: justify;"><span style="color: #000000;">Larutan penyangga ada jenis-jenisnya, lho! Apa aja sih, jenis-jenis larutan penyangga? Yuk, kita bahas!</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Jenis-Jenis Larutan Penyangga</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Ada dua jenis larutan penyangga, yaitu <span style="font-weight: bold;">larutan penyangga asam</span> dan <span style="font-weight: bold;">larutan penyangga basa</span>. </span><span style="color: #000000;"><span style="font-weight: bold;">Larutan penyangga asam</span> tersusun atas <span style="font-weight: bold;">asam lemah dan basa konjugasinya</span>. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Contohnya adalah yang ada di dalam lambung tadi, yaitu campuran <span style="font-weight: bold;">ion bikarbonat (HCO<sub>3</sub><sup>–</sup>)</span> yang berperan sebagai <span style="font-weight: bold;">asam lemah</span> dan <span style="font-weight: bold;">ion karbonat (CO<sub>3</sub><sup>2–</sup>)</span> yang berperan sebagai <span style="font-weight: bold;">basa konjugasinya</span>.</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/Jenis-Jenis%20Larutan%20Penyangga.jpg" alt="Jenis-Jenis Larutan Penyangga" width="600" /></span></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Jenis yang kedua, yaitu <span style="font-weight: bold;">larutan penyangga basa</span>. Larutan penyangga basa terdiri atas <span style="font-weight: bold;">basa lemah dan asam konjugasinya</span>. Contohnya adalah campuran dari <span style="font-weight: bold;">ammonia (NH<sub>3</sub>)</span> yang bertindak sebagai <span style="font-weight: bold;">basa lemah</span> dan <span style="font-weight: bold;">ammonium (NH<sub>4</sub><sup>+</sup>)</span> yang bertindak sebagai <span style="font-weight: bold;">asam konjugasinya</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Lalu bagaimana cara kerja dari larutan penyangga dalam menstabilkan pH?</span></p>
<p> </p>
<h2><span style="font-size: 18pt;">Cara Kerja Larutan Penyangga</span></h2>
<p style="text-align: justify;"><span style="color: #000000;">Jadi gini, cara kerja dari larutan penyangga adalah melalui <span style="font-weight: bold;">reaksi dengan spesi (zat) penyusun larutan penyangga</span>. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Misalkan larutan penyangga dari HCO<sub>3</sub><sup>–</sup> dan CO<sub>3</sub><sup>2–</sup> yang ada dalam lambung kita. Saat kita makan <span style="font-weight: bold;">makanan asam</span>, secara kimiawi, akan banyak <span style="font-weight: bold;">ion H<sup>+</sup></span> yang masuk ke dalam tubuh. Masuknya H<sup>+</sup> ini yang membuat pH darah di tubuh kita menjadi <span style="font-weight: bold;">turun (asam)</span>. Beruntung kita punya larutan penyangga di dalam lambung yang mampu <span style="font-weight: bold;">mengikat H<sup>+</sup></span> sehingga pH darah kita kembali stabil.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Adapun reaksi kimia yang terjadi adalah antara salah satu penyusun larutan penyangga, yaitu <span style="font-weight: bold;">CO<sub>3</sub><sup>2–</sup></span><span style="font-weight: normal;">dengan</span><span style="font-weight: bold;"> H<sup>+</sup></span> dari asam, dengan persamaan reaksi sebagai 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/Contoh%20Persamaan%20Reaksi%20Larutan%20Penyangga.jpg" alt="Contoh Persamaan Reaksi Larutan Penyangga" width="600" /></span></p>
<p> </p>
<p style="text-align: justify;"><span style="color: #000000;">Lalu bagaimana kalau kita mengonsumsi <span style="font-weight: bold;">makanan atau minuman</span> yang <span style="font-weight: bold;">mengandung basa</span>? Hal ini tentu akan meningkatkan pH lambung dan membuatnya menjadi basa, dong. </span></p>
<p style="text-align: justify;"><span style="color: #000000;">Eits, tapi jangan takut! Masuknya <span style="font-weight: bold;">ion OH<sup>–</sup></span> dari makanan atau minuman yang bersifat basa tadi juga akan ditangkap oleh salah satu penyusun penyangga kok, yaitu <span style="font-weight: bold;">HCO<sub>3</sub><sup>–</sup></span>. Reaksi kimianya bisa kamu lihat pada gambar di atas, ya!</span></p>
<p><strong>Baca Juga: <a href="/blog/konsep-reaksi-reduksi-oksidasi-kimia-kelas-10" rel="noopener">Mempelajari Konsep Reaksi Redoks (Reduksi-Oksidasi)</a></strong></p>
<p style="text-align: justify;"><span style="color: #000000;">Nah, kamu tahu nggak kenapa yang bertugas menangkap H<sup>+</sup> itu CO<sub>3</sub><sup>2–</sup> sementara yang menangkap OH<sup>–</sup> itu HCO<sub>3</sub><sup>–</sup> ? Coba ingat-ingat lagi <span style="font-weight: bold;">sifat</span> dari kedua zat penyusun penyangga tadi, deh!</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Penyusun penyangga yang <span style="font-weight: bold;">bereaksi dengan ion H<sup>+</sup> selalu bersifat basa</span>, yaitu ion CO<sub>3</sub><sup>2–</sup> yang merupakan <span style="font-weight: normal;">basa konjugasi</span>. Sedangkan yang <span style="font-weight: bold;">bereaksi dengan OH<sup>–</sup></span> adalah penyusun penyangga yang <span style="font-weight: bold;">bersifat asam</span>, yaitu H<sub>2</sub>CO<sub>3</sub>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Selain penyangga yang ada di darah, <span style="font-weight: bold;">di dalam sel</span> di tubuh kita juga ada larutan penyangganya, lho! Adapun larutan penyangganya adalah <span style="font-weight: bold;">H<sub>2</sub>PO<sub>4</sub><sup>–</sup> (asam)</span> dan <span style="font-weight: bold;">HPO<sub>4</sub><sup>2-</sup> (basa konjugasi)</span>.</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Apabila ada <span style="font-weight: bold;">ion H<sup>+</sup> berlebih</span> yang masuk ke dalam sel, maka akan diikat oleh penyusun penyangga <span style="font-weight: bold;">basa konjugasi (HPO<sub>4</sub><sup>2-</sup>)</span>. Sebaliknya, apabila terdapat <span style="font-weight: bold;">senyawa basa berlebih</span> di dalam cairan intrasel, maka akan ditangkap oleh penyusun penyangga <span style="font-weight: bold;">berupa asamnya</span>, yaitu<span style="font-weight: bold;"> H<sub>2</sub>PO<sub>4</sub><sup>–</sup></span>.</span></p>
<p style="text-align: center;"><span style="color: #000000;">—</span></p>
<p style="text-align: justify;"><span style="color: #000000;">Itu dia pembahasan kita tentang larutan penyangga, mulai dari pengertian, fungsi, jenis-jenis, cara kerja, serta contoh persamaan reaksinya. Ternyata, larutan penyangga ini punya peranan yang cukup vital bagi kita, ya! Kalau kamu ingin mempelajari materi seperti ini sambil menonton video animasi lengkap dengan infografik menarik dan latihan soal, coba aja tonton di <a href="https://www.ruangguru.com/ruangbelajar" target="_blank" rel="noopener"><span style="font-weight: bold;">ruangbelajar</span></a>!</span></p>
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<p style="text-align: left; font-weight: bold;"><span style="color: #000000;">Sumber Gambar:</span></p>
<p><span style="color: #000000;">GIF ‘Bayi Makan Lemon’ [Daring]. Tautan: https://metro.co.uk/wp-content/uploads/2015/12/lemon.gif?quality=90&strip=all&zoom=1&resize=480%2C393 (Diakses: 9 Maret 2022).</span></p>
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<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">
<source srcset="https://cdn-web-2.ruangguru.com/static/facebook.png?height=60" type="image/png">
<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">
<source srcset="https://cdn-web-2.ruangguru.com/static/linkedin.png?height=60" type="image/png">
<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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<img src="https://cdn-web-2.ruangguru.com/static/tiktok.png" loading=" lazy" alt="Logo TikTok Footer" width="32px" height="32px" />
</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>