Chapter 2, Problem 2.52P

Interpretation Introduction

Interpretation: The reason for the lower ${\text{pK}}_{\text{a}}$ value of propiolic acid than propanoic acid is to be explained.

Concept introduction: The acidity of a compound is inversely related to the ${\text{pK}}_{\text{a}}$ value. If the acidity of a compound is high, then the ${\text{pK}}_{\text{a}}$ value of the compound is low. Similarly, if the acidity of a compound is low, then the ${\text{pK}}_{\text{a}}$ value of the compound is high.