Determine the correct answer. 1. An ideal solution contains 92. 1g of glycerin, C 3 H 5 (OH) 3, and 184.4 g of ethanol, C 2 H 5 OH, at 40°C. The vapor pressure of pure ethanol is 0.178 atm at 40°C. What is the molality of the solution? What is the vapor pressure of a solution?

Determine the correct answer. 1. An ideal solution contains 92. 1g of glycerin, C 3 H 5 (OH) 3, and 184.4 g of ethanol, C 2 H 5 OH, at 40°C. The vapor pressure of pure ethanol is 0.178 atm at 40°C. What is the molality of the solution? What is the vapor pressure of a solution?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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

Determine the correct answer.
1. An ideal solution contains 92.1 g of glycerin, C 3 H 5 (OH) 3 , and
184.4 g of ethanol, C 2 H 5 OH, at 40°C. The vapor pressure of
pure ethanol is 0.178 atm at 40°C. What is the molality of the
solution? What is the vapor pressure of a solution?
A. 5.43 m, 57.86 torr
B. 21.7 m, 90.34 torr
C. 21.7 m, 12.56 torr
D. 5.43 m, 23.4 torr

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A solution made by dissolving 150.0 g of an unknown compound in 425.0 mL of benzene to make a solution which has a freezing point 18.6 °C lower than that of pure benzene. Kf for benzene is 5.12 °C/m and the density of benzene is 0.877 g/mL. What was the molality of the solution? How many moles of the unknown compound were dissolved in the solution? What is the molar mass of the unknown compound?