What is the boiling point elevation constant Kb​, for water? b) What is the molality of the NaCl solution? c) What is the change in boiling point, ΔTb​, of this solution? Assume that the van't Hoff factor for the solute is the same as it would be for a 0.050 molal solution.

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter10: Solutions
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Problem 73QAP: Consider three test tubes. Tube A has pure water. Tube B has an aqueous 1.0 m solution of ethanol,...
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When learning how to cook pasta, you may have been told to add salt to the water to increase the boiling point, allowing the water to get hotter and cook the noodles faster. Let's test that concept here. Assume that you have 575.0  g of pure water to which you add 3.95 g of sodium chloride,NaCl (a non-volatile solute). Answer each of the questions below.

a) What is the boiling point elevation constant Kb​, for water?

b) What is the molality of the NaCl solution?

c) What is the change in boiling point, ΔTb​, of this solution? Assume that the van't Hoff factor for the solute is the same as it would be for a 0.050 molal solution.

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