What is the pH of a buffer solution containing 0.155 mol dm-3 of benzoic acid and 0.315 mol dm-3 sodium benzoate. (pKa of benzoic acid is 4.20.)?
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What is the pH of a buffer solution containing 0.155 mol dm-3 of benzoic acid and 0.315 mol dm-3 sodium benzoate. (pKa of benzoic acid is 4.20.)?