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A quantity of 26.4 mL of a 0.45 M acetic acid (CH3COOH) solution is added to...

A quantity of 26.4 mL of a 0.45 M acetic acid (CH3COOH) solution is added to a 31.9 mL of a 0.37 M sodium hydroxide (NaOH) solution. What is the pH of the final solution?

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Answer #1

First the rxn is as follows:

CH3COOH + NaOH -> CH3COONa + H2O

then we have to look for the limit reagent:

and

using the henderson hasselbalch eq:

then pKa = 4.757

and pH = 5.94

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