(Answered) A 1291-g sample of a solid weak monoprotic acid is used to

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A 1.291-g sample of a solid, weak, monoprotic acid is used to make100.0 mL of solution. 60.0 mL of this solution was titrated with0.09203-M NaOH. The pH after the addition of 27.01 mL of base was4.15, and the equivalence point was reached with the addition of47.14 mL of base.

a) What is the molar mass of the acid?

b) What is the pKa of the acid?

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