Chapter 8, Problem 78P

(a)

Interpretation Introduction

Interpretation:

• The stronger acid has to be predicted.

Concept Introduction:

Effect of delocalized electrons on ${\text{pK}}_{\text{a}}$Values:

Due to Inductive effect, an anion is stabilized by a nearby electronegative atom.  In the same way, electron delocalization also effective on stabilization of anion.

Rule: The strength of an acid depends on the stability of its conjugate base.

(b)

Interpretation Introduction

Interpretation:

• The stronger base has to be predicted.

Concept Introduction:

Effect of delocalized electrons on ${\text{pK}}_{\text{a}}$Values:

Due to Inductive effect, an anion is stabilized by a nearby electronegative atom.  In the same way, electron delocalization also effective on stabilization of anion.

Rule: The strength of an acid depends on the stability of its conjugate base.