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In a flask, you have 40.00 mL of 0.480 M propanoic acid, a weak monoprotic acid...

In a flask, you have 40.00 mL of 0.480 M propanoic acid, a weak monoprotic acid with Ka = 1.3 × 10−5. Calculate the pH after the addition of 26.90 mL of 0.480 M NaOH. Report your answer to TWO places past the decimal.

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