Chapter 16, Problem 16.17P

Interpretation Introduction

Interpretation:

The vapor pressure of an aqueous solution at ${37}^{\circ }C$ containing $20.0g$ of glucose dissolved in $500.0g$ of water and the vapor pressure lowering has to be calculated.

Concept Introduction:

Raoult’s law:

It states that the equilibrium vapor pressure of the solvent over a solution is directly proportional to the mole fraction of the solvent in the solution.

The expression for the vapor pressure lowering is given below.

  $\Delta P={\chi }_2{P}^{\circ }$

Where, $\Delta P$ is vapor pressure lowering, ${\chi }_2$ is the mole fraction of solute and $P^{\circ }$ is vapor pressure of the pure solvent.