Answered: What is vapor pressure lowering?

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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What is vapor pressure lowering?

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The addition of a nonvolatile solute will leads to the lowering of vapor pressure. The reason is that the molecules of a nonvolatile solute take up space on the surface of the liquid when added to a solution. Thus, there are only some solvent molecules on the surface of the liquid and only little opportunities are there to escape than they do in the pure solvent. Therefore, the vapor pressure of solution gets decreases by the addition of a nonvolatile solute.

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