The boiling point of 3 m solution of Ca NO 3 2 in water is to be determined. Concept Introduction: The temperature at which the vapour pressure of a substance is equal to the external atmospheric pressure is called the boiling point. On addition of solute molecules, the vapour pressure of the solvent is reduced. So, temperature must be further increased for converting more solvent molecules to gaseous phase and hence, the boiling point is elevated.

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Chapter 11, Problem 118QP

Interpretation Introduction

Interpretation:

The boiling point of 3 m solution of CaNO32 in water is to be determined.

Concept Introduction:

The temperature at which the vapour pressure of a substance is equal to the external atmospheric pressure is called the boiling point. On addition of solute molecules, the vapour pressure of the solvent is reduced. So, temperature must be further increased for converting more solvent molecules to gaseous phase and hence, the boiling point is elevated.

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