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A buffer is made up 0.24 M propanoic acid, CH3CH2COOH, a weak monoprotic acid, and 0.17 M of sodium propanoate, CH3CH2COONa. What is the pH of the solution after the addition of 5.00 mL of 0.10M NaOH to 50.0 mL of buffer solution? Ka of CH3CH2COOH = 1.4 10-5.

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