301VapourPressure

301VapourPressure - Liquids, Solutions and Phase Equilibria...

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Lesson 10 1 Lesson 10 Liquids, Solutions and Phase Equilibria Chapters 13 and 14 (Petrucci et al.) Lesson 10 Phase equilibrium A phase is a region of uniform properties At phase equilibrium there is no net conversion of one phase to the other – equilibrium is a dynamic process Lesson 10 Vapour pressure The vapour pressure is the pressure measured when the system reaches phase equilibrium P vap = f ( T, gas type ) P vap is intensive (does not depend on the size of the system) Ex: for H 2 O at 25 °C, P vap = 23.8 mmHg. For mixtures at equilibrium: the partial pressure of each component is given by P vap .
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Lesson 10 2 Lesson 10 Vapour pressure of water Lesson 10 Vapour pressures of several liquids a) Diethyl ether, C 4 H 10 O b) Benzene, C 6 H 6 c) Water, H 2 O d) Toluene, C 7 H 8 e) Aniline, C 6 H 7 N Normal Boiling Points Lesson 10 Vapour pressure curves for several compounds
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Lesson 10 3 Lesson 10 Antoine’s equation for P vap The vapour pressure of a compound is a strong function
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This note was uploaded on 11/29/2011 for the course CHE 102 taught by Professor Simon during the Fall '08 term at Waterloo.

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301VapourPressure - Liquids, Solutions and Phase Equilibria...

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