Chapter 12, Problem 24PE

Interpretation Introduction

Interpretation:

The molar mass of the unknown compound is to be determined.

Concept Information:

The temperature at which change of liquid state to solid state takes place is called as freezing point.

The freezing point depression is:

$\Delta T_{\text{f}}=m\times K_{\text{f}}$

Here, $\Delta T_{\text{f}}$ is the change in temperature of the freezing point in $\text{C}$, $m$ is the molality of the solution in $\frac{\text{mol solute}}{\text{kg solvent}}$, and $K_{\text{f}}$ is the freezing point depression constant for the solvent.