Chapter 13, Problem 35E

(a)

Interpretation Introduction

To give: The nature of dissolution of ammonium chloride, whether endothermic or exothermic.

(b)

Interpretation Introduction

To give: Conclusion about the relative magnitudes of the heat of hydration and its lattice energy.

(c)

Interpretation Introduction

To draw: A qualitative energy diagram to show the dissociation that takes place in ${\text{NH}}_{\text{4}}\text{Cl}$.

(d)

Interpretation Introduction

To explain: The reason for the formation of solution and the driving force.