2-08-11 Exam1 Review - CH 302 Exam 1 Review 2/08/11 IMF...

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CH 302 Exam 1 Review 2/08/11 IMF Vapor pressure of pure substances Heating curve Phase diagram Solution thermodynamics Vapor pressure of solutions/mixtures Boiling point elevation and freezing point depression I NTERMOLECULAR F ORCES 1. Determine the dominant intermolecular force in the following compounds. Then Arrange them in the order of increasing expected vapor pressure at 25°C. HF H-bond Al 2 O 3 Ionic CH 3 CH 2 CH 3 Dispersion CH 3 CH 2 CH 2 Br Dipole-dipole CH 3 CH 2 CH 2 NH 2 H-bond Al 2 O 3 < CH 3 CH 2 CH 2 NH 2 < HF < CH 3 CH 2 CH 2 Br < CH 3 CH 2 CH 3
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V APOR P RESSURE OF P URE S UBSTANCES 2. It takes longer to cook pasta in Colorado because water boils at a (higher/lower) temperature under (higher/lower) atmospheric pressure. If water boils at 92°C in Colorado Springs, what is the atmospheric pressure in this city? The molar heat of vaporization of water is 40.7 kJ/mol. 0.75
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2-08-11 Exam1 Review - CH 302 Exam 1 Review 2/08/11 IMF...

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