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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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.
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