1. A student determines the molar mass of methanol, CH3OH by the same method used in this experiment. She found that the equilibrium temperature of ice and pure water was 0.4 ˚C. When she added 10.0 g of her sample (CH3OH), it fell to -5.4˚C. The mass of the solution was 101.8 g. What was the freezing point depression? What was the molality of CH3OH? How many moles of CH3OH are in the solution? Find the molar mass of CH3OH from the experimental data. How does it compare the value calculated from the periodic table?
1. A student determines the molar mass of methanol, CH3OH by the same method used in this experiment. She found that the equilibrium temperature of ice and pure water was 0.4 ˚C. When she added 10.0 g of her sample (CH3OH), it fell to -5.4˚C. The mass of the solution was 101.8 g. What was the freezing point depression? What was the molality of CH3OH? How many moles of CH3OH are in the solution? Find the molar mass of CH3OH from the experimental data. How does it compare the value calculated from the periodic table?
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter10: Solutions
Section: Chapter Questions
Problem 85QAP
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1. A student determines the molar mass of methanol, CH3OH by the same method used in this experiment. She found that the equilibrium temperature of ice and pure water was 0.4 ˚C. When she added 10.0 g of her sample (CH3OH), it fell to -5.4˚C. The mass of the solution was 101.8 g.
- What was the freezing point depression?
- What was the molality of CH3OH?
- How many moles of CH3OH are in the solution?
- Find the molar mass of CH3OH from the experimental data. How does it compare the value calculated from the periodic table?
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