The vapour pressure of water at 50.0°C is 92.50 torr. When 12.6 g of glycerol are dissolved in 494 g of water, the vapour pressure is lowered to 92.04 torr. (a) What is the molar mass of glycerol? (b) What is the molecular formula of glycerol (a compound containing C, H, and O) from the following combustion analysis: when 2.00 g glycerol are combusted, 2.865 g CO₂ and 1.564 g H₂O are recovered.

The vapour pressure of water at 50.0°C is 92.50 torr. When 12.6 g of glycerol are dissolved in 494 g of water, the vapour pressure is lowered to 92.04 torr. (a) What is the molar mass of glycerol? (b) What is the molecular formula of glycerol (a compound containing C, H, and O) from the following combustion analysis: when 2.00 g glycerol are combusted, 2.865 g CO₂ and 1.564 g H₂O are recovered.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter12: Solutions

Section: Chapter Questions

Problem 12.94QE

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