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ChemistryGeneral Chemistry

Colligative Properties: Freezing Point of a 0.33 m Benzene Solution

Calculate the freezing point of an ideal nonelectrolyte solution in benzene using molality and freezing-point depression.

Question

Assume ideal behavior for a 0.33 mol/kg solution of a nonvolatile nonelectrolyte in benzene. Find its freezing temperature.

Reference data from Table 11.2: pure benzene freezes at 5.5 °C and its freezing-point depression constant is 5.12 °C kg/mol.

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Evidence boundary

This is a theoretical calculation for the ideal, nonvolatile nonelectrolyte solution in OpenStax Example 11.9. The benzene constants come from the same section’s Table 11.2. It predicts an equilibrium freezing temperature, not a measured cooling-curve result.