The explanation of the statement that a mixture of ice (and water) and salt is used to freeze homemade ice cream rather than using just ice is to be stated. Concept introduction: The colligative properties depend on the number of moles of solute in solvent irrespective of their chemical identities. Depression in freezing point causes the freezing point of the solution to become lower than that of the solvent. This is given by, Δ T f = n K f M Where, • n is the number of ions in the solution. • K f is the freezing point constant which is defined for a particular solvent. • M is the molarity of solution.

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Chapter 7, Problem 7.62E

Interpretation Introduction

Interpretation:

The explanation of the statement that a mixture of ice (and water) and salt is used to freeze homemade ice cream rather than using just ice is to be stated.

Concept introduction:

The colligative properties depend on the number of moles of solute in solvent irrespective of their chemical identities.

Depression in freezing point causes the freezing point of the solution to become lower than that of the solvent. This is given by,

ΔTf=nKfM

Where,

• n is the number of ions in the solution.

• Kf is the freezing point constant which is defined for a particular solvent.

• M is the molarity of solution.

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