Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Vapour Pressure of Solutions of Non-Volatile or Volatile Solutes
14.356 g of a non-volatile solute is dissolved in 265.0 g of water.
The solute does not react with water nor dissociate in solution.
Assume that the resulting solution displays ideal Raoult's law behaviour..
At 20°C the vapour pressure of the solution is 17.396 torr.
The vapour pressure of pure water at 20°C is 17.535 torr.
Calculate the molar mass of the solute (g/mol).
See example 17.1 on pp718-9 of Zumdahl "Chemical Principles" 8th ed.
1pts
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Now suppose, instead, that 14.356 g of a volatile solute is dissolved in 265.0 g of water.
This solute also does not react with water nor dissociate in solution.
The pure solute displays, at 20°C, a vapour pressure of 1.754 torr.
Again, assume an ideal solution.
If, at 20°C the vapour pressure of this solution is also 17.396 torr.
Calculate the molar mass of this volatile solute.
cf p 719 of Zumdahl "Chemical Principles" 8th ed.
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Transcribed Image Text:Vapour Pressure of Solutions of Non-Volatile or Volatile Solutes 14.356 g of a non-volatile solute is dissolved in 265.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour.. At 20°C the vapour pressure of the solution is 17.396 torr. The vapour pressure of pure water at 20°C is 17.535 torr. Calculate the molar mass of the solute (g/mol). See example 17.1 on pp718-9 of Zumdahl "Chemical Principles" 8th ed. 1pts Submit Answer Tries 0/5 Now suppose, instead, that 14.356 g of a volatile solute is dissolved in 265.0 g of water. This solute also does not react with water nor dissociate in solution. The pure solute displays, at 20°C, a vapour pressure of 1.754 torr. Again, assume an ideal solution. If, at 20°C the vapour pressure of this solution is also 17.396 torr. Calculate the molar mass of this volatile solute. cf p 719 of Zumdahl "Chemical Principles" 8th ed.
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