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Calculate the pH of a mixture of 0.10M acetic acid and 0.20M sodium acetate. The pKa of acetic acid is 4.76.(a) 5.1(b) 4.1(c) 6.1(d) 7.1 |
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Answer» Correct choice is (a) 5.1 The explanation: pH = pKa + log [acetate]/[acetic acid] = 4.76 + log (0.2/0.1) = 4.76 + 0.30 = 5.1. |
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