larutan CH3COOH 0,1 M dititrasi dengan larutan NaOH 0,1 M volume CH3COOH 10 mL NaOH 11 mL. jika ka.CH3COOH = 1.10-3. tentukan larutan PH tersebut
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Pertanyaan
larutan CH3COOH 0,1 M dititrasi dengan larutan NaOH 0,1 M volume CH3COOH 10 mL NaOH 11 mL. jika ka.CH3COOH = 1.10-3. tentukan larutan PH tersebut
1 Jawaban
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1. Jawaban ummiy73
Mol CH3COOH = 0,1×10 = 1 mmol
Mol NaOH = 0,1×11 = 1,1 mmol
[H+] = 1.10-3 × 1/1,1 = 0,9 × 10-3
pH = -log [H+] = -log 0,9 × 10-3 = 3-log 0,9