The aqueous solution having lower freezing point should be determined. Concept introduction: The concepts which are used here are as follows: Colligative Properties: The properties of ideal solution which depends only on the number of particles of the solute dissolved in a definite amount of solvent and do not depends on the nature of the solute. Freezing point: Freezing point of a substance is the temperature at which the solid and the liquid forms of the substance are in equilibrium. Depression in freezing point: It is observed that the freezing point of the solution is always lower than that of pure solvent. The decrease is called the depression in freezing point. Van’t Hoff factor: It is defined as the ratio of the experimental value of colligative property to the calculated value of the colligative property. Since, depression in freezing point is a colligative property so the relation between van’t hoff factor and depression in freezing point is Δ T F = i × m , where i is the van’t hoff factor and m is the molality.

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Chapter 6.8, Problem 6.11P

Interpretation Introduction

Interpretation:

The aqueous solution having lower freezing point should be determined.

Concept introduction:

The concepts which are used here are as follows:

Colligative Properties: The properties of ideal solution which depends only on the number of particles of the solute dissolved in a definite amount of solvent and do not depends on the nature of the solute.

Freezing point: Freezing point of a substance is the temperature at which the solid and the liquid forms of the substance are in equilibrium.

Depression in freezing point: It is observed that the freezing point of the solution is always lower than that of pure solvent. The decrease is called the depression in freezing point.

Van’t Hoff factor: It is defined as the ratio of the experimental value of colligative property to the calculated value of the colligative property. Since, depression in freezing point is a colligative property so the relation between van’t hoff factor and depression in freezing point is ΔTF=i×m, where i is the van’t hoff factor and m is the molality.

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