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Ch.17 - Aqueous Ionic Equilibrium
Chapter 17, Problem 78

Is a 0.446-g sample of an unknown monoprotic acid titrated with 0.105 M KOH resulting in a titration curve sufficient to determine the molar mass and pKa of the acid?

Verified step by step guidance
1
Identify the type of titration: This is a titration of a monoprotic acid with a strong base (KOH).
Determine the equivalence point: The equivalence point is reached when the moles of KOH added equal the moles of the unknown acid present in the sample.
Calculate the moles of KOH used: Use the volume of KOH solution at the equivalence point and its molarity to find the moles of KOH.
Relate moles of KOH to moles of acid: Since the acid is monoprotic, the moles of KOH will equal the moles of the acid at the equivalence point.
Calculate the molar mass of the acid: Divide the mass of the acid sample by the moles of acid to find the molar mass.