Chapter 14, Problem 112IAE

Interpretation Introduction

(a)

Interpretation:

Mole fraction of solute in liquid phase needs to be calculated.

Concept introduction:

The mole fraction of a compound A can be calculated as follows:

${\text{Mole fraction of Compund A (X}}_A\text{) = }\frac{\text{Number of moles of compund A}}{\text{Total number of moles in the solution}}$

Here, total number of moles in the solution is sum of number of moles of solute and solvent.

Interpretation Introduction

(b)

Interpretation:

Compound with higher vapor pressure should be determined.

Concept introduction:

Pressure exerted by the vapor phase molecules on the liquid, when the gas molecules and the liquid molecules in an equilibrium in a closed system, where liquid is not taking all the volume of the vessel known as the vapor pressure.

Interpretation Introduction

(c)

Interpretation:

Percent of solute in vapor phase should be calculated.

Concept introduction:

The percent of A compound in vapor phase can be calculated as follows:

$\text{percent of compond A in vapour phase = }\frac{\text{No}\text{. of moles of A in vapour phase}}{\text{Total number of moles in vapor phase }}\times 100\%$