Chapter 13, Problem 13.59QP

Interpretation Introduction

Interpretation: Obvious anomaly of ${\text{C}}_{\text{7}}{\text{H}}_{\text{6}}{\text{O}}_{\text{2}}$ to be explained.

Concept introduction

• Freezing point is the temperature at which liquid turns into solid.
• Freezing point depression${\text{(ΔT}}_{\text{f}}\text{)}$ is distinction between freezing point of the pure solvent ${\text{(T}}_{\text{f}}^{\text{°}}\text{)}$ and the freezing point of the solution ${\text{(T}}_{\text{f}}\text{)}$.

  ${\text{ΔT}}_{\text{f}}{\text{= K}}_{\text{f}}\text{m}$

Where,

${\text{ΔT}}_{\text{f}}-$ Change in freezing point

${\text{K}}_{\text{f}}-$ Molal freezing point constant

m- Molality of the solution