A) When 1.0105 g of an unknown was added, the freezing point of the solution was determined to be 41.8°C. Calculate the change in the freezing point, and then calculate the molality of the solution. The Kf of lauric acid is 3.90 °C? B) Using the determined molality, calculate the number of moles of unknown present, and then calculate the molar mass of the unknown.

A) When 1.0105 g of an unknown was added, the freezing point of the solution was determined to be 41.8°C. Calculate the change in the freezing point, and then calculate the molality of the solution. The Kf of lauric acid is 3.90 °C? B) Using the determined molality, calculate the number of moles of unknown present, and then calculate the molar mass of the unknown.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter13: Solutions And Their Behavior

Section13.5: Colloids

Problem 1.3ACP

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