The freezing point of cyclohexane is 6.50 °C. A solution is prepared by dissolving 0.5580g of an unknown solute in 33.50 g cyclohexane. The freezing point of the solution is 4.32 °C. Calculate the molar mass of the unknown solute. Kf for cyclohexane is 20.0 °C.kg/mole. (show work)

The freezing point of cyclohexane is 6.50 °C. A solution is prepared by dissolving 0.5580g of an unknown solute in 33.50 g cyclohexane. The freezing point of the solution is 4.32 °C. Calculate the molar mass of the unknown solute. Kf for cyclohexane is 20.0 °C.kg/mole. (show work)

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter13: The Chemistry Of Solutes And Solutions

Section13.7: Colligative Properties Of Solutions

Problem 13.17CE

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

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The freezing point of cyclohexane is 6.50 °C.
A solution is prepared by dissolving 0.5580g
of an unknown solute in 33.50 g
cyclohexane. The freezing point of the
solution is 4.32 °C. Calculate the molar mass
of the unknown solute. Kf for cyclohexane is
20.0 °C.kg/mole. (show work)

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