Chapter 14.3, Problem 42SSC

Interpretation Introduction

Interpretation:

Vapor pressure of solution is lower than pure solvent, needs to be described on particle basis.

Concept introduction:

Solution can be defined as a homogenous mixture that consist of two components solute and solvent.

Solvent: Solvent can be defined as a component that dissolves other component.

Solute: Solute can be defined as a component that is dissolved in the other component, solvent.

During solution formation, solute and solvent particles collide with each other, so that the solute gets dissolves in solvent.

Vapor pressure:

Vapor pressure is defined as the pressure exerted by a liquid particle that have entered the gaseous state in a closed container.

Answer to Problem 42SSC

Solution consists of two components- solute and solvent, so in a solution, solvent contains a solute, so lesser solventparticles occupy the surface and lesser particlesescape into the gaseous state that’s why vapor pressure of solution is lower than pure solvent

Vapor pressure is defined as the pressure exerted by a liquid particle that have entered the gaseous state in a closed container. When a non-volatile solute is added in solvent, it lowers the vapor pressure of the solvent. The particles escape the liquid phase at its surface that lowers the vapor pressure while in a pure solvent, the particles occupied the whole surface area, that is more particle will escape in gaseous state and vapor pressure increases.

  Pure solvent   Solution(solute+solvent)

Explanation of Solution

Vapor pressure is defined as the pressure exerted by a liquid particle that have entered the gaseous state in a closed container. When a non-volatile solute is added in solvent, it lowers the vapor pressure of the solvent. The particles escape the liquid phase at its surface that lowers the vapor pressure while in a pure solvent, the particles occupied the whole surface area, that is more particle will escape in gaseous state and vapor pressure increases.

  Pure solvent   Solution(solute+solvent)