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A 22.5 mL sample of an acetic acid solution is titrated with a 0.175M NaOH solution....

A 22.5 mL sample of an acetic acid solution is titrated with a 0.175M NaOH solution. The equivalence point is reached when 37.5 mL of the base is added.
What was the concentration of acetic acid in the original (22.5mL) sample?
What is the pH of the equivalence point?

Ka acetic acid= 1.75E-5
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