Chapter 16, Problem 129E

Interpretation Introduction

Interpretation:

The molal freezing point constant of the unknown solvent when the solution of $\text{11}\text{.4}\text{g}$ of ethanol, ${\text{C}}_{\text{2}}{\text{H}}_{\text{5}}\text{OH}$, in $\text{2}{\text{.00×10}}^{\text{2}}\text{g}$ of the solvent freezes at $\text{22}{\text{.5}}^{\text{o}}\text{C}$ is to be calculated.

Concept introduction:

Molality is defined as the measure of concentration of moles of solute in a solution. It is calculated by dividing the no. of moles of solute by the weight of solvent in $\text{Kg}$.

Colligative properties are defined as the physical properties of some dilute solutions which depend on the molal concentration of the solutes.