Chapter 3.3, Problem 5ATS

Interpretation Introduction

Interpretation:  For given compound the most acidic proton to be determined.

Concept Introduction

There are two ways to identify the acidity of the compounds,

1. 1) Via comparing ${\text{pK}}_{\text{a}}$ values of the given compounds (quantitative approach)
2. 2) Via study the structures of the acid (qualitative approach)

However, herein we consider only comparing ${\text{pK}}_{\text{a}}$ values.

${\text{PK}}_{\text{a}}$Value: The ${\text{pK}}_{\text{a}}$ value computes the acidity of an acid. This value depends upon the chemical property and identity of the compound.

${\text{pK}}_{\text{a}}$ ${\text{= - log K}}_{\text{a}}$

Where,

${\text{K}}_{\text{a}}$ is the measure of strength of an acid. If the acid is strong means ${\text{K}}_{\text{a}}$ on the order of ${\text{10}}^{\text{10}}$ and weak means ${\text{K}}_{\text{a}}$ on the order of ${\text{10}}^{-50}.$ Strong acid means ${\text{pK}}_{\text{a}}$ value is low value and Weak acid means ${\text{pK}}_{\text{a}}$ value is high.