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Putri Khalisha

on 31 March 2013

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Transcript of Buffer

Larutan Penyangga (Buffer) Pengertian & Jenis Larutan Penyangga - Larutan yang dapat mempertahankan nilai pH

- Larutan Penyangga Asam
Mempertahankan pH pada daerah asam (pH<7)
- Larutan Penyangga Basa
Mempertahankan pH pada daerah basa (pH>7) Larutan Penyangga Asam - Mengandung asam lemah (HA) dan basa
konjugasinya (ion A-) Larutan Penyangga Basa - Mengandung basa lemah (B) dan asam
konjugasinya (BH+) Menghitung pH Kapasitas Larutan Penyangga Bergantung pada 2 hal :

- Jumlah mol komponen penyangga
(semakin sedikit, perubahan pH semakin besar)

- Perbandingan mol komponen penyangga
(semakin besar perbandingan, semakin besar
perubahan pH; tidak lagi bersifat penyangga)
CH3COOH CH3COOH H+ OH- CH3COO- CH3COO- Asam Basa Asam Basa NH3 NH4+ NH3 NH4+ H+ OH- Asam Basa Asam Basa Fungsi Larutan Penyangga Soal Latihan Thank you
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