Chapter 6, Problem 6C.2BST

(a)

Interpretation Introduction

Interpretation:

The strongest base among ${\text{C}}_{\text{5}}{\text{H}}_{\text{5}}\text{N}$ and ${\text{NH}}_{\text{2}}{\text{NH}}_{\text{2}}$ has to be chosen considering the $K_b$ values.

Concept Introduction:

Weaker acid due to proton transfer has a stronger conjugate base.  If the base has a large basicity constant, then the conjugate acid will have small $K_a$ value.  If the acid has a large acidity constant, then the conjugate base will have small $K_b$ value.  If the acid has more $K_a$ value, then the acid will be stronger.  If the base has more $K_b$ value, then the base will be stronger.

(b)

Interpretation Introduction

Interpretation:

The strongest acid among ${\text{C}}_{\text{5}}{\text{H}}_{\text{5}}{\text{NH}}^{\text{+}}$ and ${\text{NH}}_{\text{2}}{\text{NH}}_{\text{3}}{}^{\text{+}}$ has to be chosen considering the $K_b$ values.

Concept Introduction:

Refer part (a).

(c)

Interpretation Introduction

Interpretation:

The strongest acid among ${\text{HIO}}_{\text{3}}$ and ${\text{HClO}}_{\text{2}}$ has to be chosen considering the $K_a$ values.

Concept Introduction:

Refer part (a).

(d)

Interpretation Introduction

Interpretation:

The strongest base among ${\text{ClO}}_{\text{2}}{}^{\text{-}}$ and ${\text{HSO}}_{\text{3}}{}^{\text{-}}$ has to be chosen considering the $K_b$ values.

Concept Introduction:

Refer part (a).