Cigars are best stored in a “humidor” at 18°C and 55% relative humidity. This means the pressure of water vapour should be 55% of the vapour pressure of pure water at the same temperature. The proper humidity can be maintained by placing an aqueous solution of glycerol, C3H5(OH)3 , inside the humidor. Calculate the concentration of glycerol (in mass %) required to lower the vapour pressure of water to the desired value. Assume ideal behaviour, with glycerol as a nonvolatile component. MW glycerol = 92.09 g/mol.

At 18°C and 55% relative humidity, the pressure of water vapour should be 55% of the vapour pressure…

Answered: Cigars are best stored in a “humidor”…

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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Cigars are best stored in a “humidor” at 18°C and 55% relative humidity. This means the pressure of water vapour should be 55% of the vapour pressure of pure water at the same temperature. The proper humidity can be maintained by placing an aqueous solution of glycerol, C₃H₅(OH)₃, inside the humidor. Calculate the concentration of glycerol (in mass %) required to lower the vapour pressure of water to the desired value. Assume ideal behaviour, with glycerol as a nonvolatile component. MW glycerol = 92.09 g/mol.

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