The composition of vapor in terms of mole fraction is to be determined. Concept introduction: Raoult’s law is a chemical law which states the relationship between vapor pressure and the mole fraction of the solute. It states that the partial pressure of each component of an ideal mixture is calculated by the multiplication of the vapor pressure of the pure component and its mole fraction in the mixture. It is not valid for a volatile solute. According to Raoult’s law, the vapor pressure of the solvent is given as follows: P solvent = X solvent P solvent ° (1) Here, P solvent is the vapor pressure of the solvent. X solvent is the mole fraction of the solvent. P solvent ° is the vapor pressure of the pure solvent.

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Chapter 13, Problem 13.134P

Interpretation Introduction

Interpretation:

The composition of vapor in terms of mole fraction is to be determined.

Concept introduction:

Raoult’s law is a chemical law which states the relationship between vapor pressure and the mole fraction of the solute. It states that the partial pressure of each component of an ideal mixture is calculated by the multiplication of the vapor pressure of the pure component and its mole fraction in the mixture. It is not valid for a volatile solute.

According to Raoult’s law, the vapor pressure of the solvent is given as follows:

Psolvent=XsolventPsolvent° (1)

Here,

Psolvent is the vapor pressure of the solvent.

Xsolvent is the mole fraction of the solvent.

Psolvent° is the vapor pressure of the pure solvent.

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