Chapter 12, Problem 12.98QE

(a)

Interpretation Introduction

Interpretation:

The molality of hydrochloric acid in benzene solution has to be calculated.

Concept Introduction:

Freezing point depression:  The freezing point depression is proportional to the concentration of the solute particles and is given by the equation,

  ${\text{ΔT}}_{\text{f}}{\text{=mk}}_{\text{f}}$

Here,

  ${\text{ΔT}}_{\text{f}}\text{=}$ Freezing point of the solution

  $\text{m=}$ Molal concentration

  ${\text{k}}_{\text{f}}\text{=}$ Freezing point depression constant (depends on the solvent used).

(b)

Interpretation Introduction

Interpretation:

The molality of hydrochloric acid in water solution has to be calculated.

Concept Introduction:

Refer to part (a).

(c)

Interpretation Introduction

Interpretation:

The difference in values found in the molality of hydrochloric acid in benzene solution and water solution has to be explained.