Chapter 4, Problem 29E

(a)

Interpretation Introduction

Interpretation:

Whether for the given reaction, the value of $K_{eq}$ is large number or small number should be determined and for this reaction whether the reactant is more or product is more at equilibrium should be determined.

  ${\text{NH}}_{\text{3}}{\text{+H}}_{\text{2}}\text{O}\to {\text{NH}}_{\text{4}}^{\text{+}}{\text{+OH}}^{-}$

Concept Introduction:

A substance which produces ${\text{H}}^{+}$ or proton when dissolved in aqueous solution is known as an acid. These are proton donor.

A substance which produces hydroxide ion when dissolved in aqueous solution is known as a base. These are proton acceptor.

A chemical reaction which takes place between an acid and a base is known as acid-base reaction.

The value that defines the relationship between the amount of products and reactants at equilibrium is known as equilibrium constant.

(b)

Interpretation Introduction

Interpretation:

Whether the answer in part (a) is consistent with the energy diagram for the reaction should be determined.

Concept Introduction:

A substance which produces ${\text{H}}^{+}$ or proton when dissolved in aqueous solution is known as an acid. These are proton donor.

A substance which produces hydroxide ion when dissolved in aqueous solution is known as a base. These are proton acceptor.

A chemical reaction which takes place between an acid and a base is known as acid-base reaction.

The value that defines the relationship between the amount of products and reactants at equilibrium is known as equilibrium constant.

(c)

Interpretation Introduction

Interpretation:

Among the following options, the option which describes best the mathematical relationship between $\Delta \text{H}$ and $K_{eq}$ .

Concept Introduction:

A substance which produces ${\text{H}}^{+}$ or proton when dissolved in aqueous solution is known as an acid. These are proton donor.

A substance which produces hydroxide ion when dissolved in aqueous solution is known as a base. These are proton acceptor.

A chemical reaction which takes place between an acid and a base is known as acid-base reaction.

The value that defines the relationship between the amount of products and reactants at equilibrium is known as equilibrium constant.