chem312ex1key

chem312ex1key - d A ---\ yc\'T --(' 3h '34 Partial...

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Chemistry 312 Physical Chemistry II Spring 2009 Exam 1 Feb. 18,2009 Show all work for full credit! 1. For each situation below, give the most important fundamental thermodynSLMic potential, the conditions for spontaneity and equilibrium, the natural variables, the differential expression for the relevant potential, and the partial derivatives of the relevant potential. Insulating, impermeable, constant volume walls Thermodynamic potential: 5-' t- Condition for spontaneity: > 0 Condition for equilibrium: S ,l? P > \ \~,Iv W Natural variables: I Differential expression: .L (1 L' '+ P-'A" -A 'in .'JS T e 2s I Partial derivatives: Mv;: (dQ~ (3~ A- -i- (E)',: -+ Non-insulating, impermeable, constant volume walls, T bath present Thermodynamic potential: He\ 1.)1a F~w f IICJ~\~, A Condition for spontaneity: Condition for equilibrium: ,h )h i h \ \z{ L. \v Natural variables: Differential expression:
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Unformatted text preview: d A ---\ yc\'T --(' 3h '34 Partial derivatives: ) - (? ) rn 1-( =) TL Non-insulating, impermeable, variable volume walls, T md P baths present Thermodynamic potential: G \)?.bs Fne &lpi7l 6-1 Condition for spontaneity: A & ( 0 Condition for equilibrium: 6 PI ' I n J I t?l Natural variables: f', 'r, n Differential expression: (+ -P d a l derivatives: 3 p I,,, 2. On the graph below, sketch four Z vs p curves for four real gases with the properties below. Label each curve a, by c, or d according to the case. Pay careful attention to the steepnesses or slopes of the curves and how they are related to molecular properties. a) a gas is composed of molecules with & molecular volurne, with strong attractive interactions between them b) a gas is composed of molecules with & molecular volurne, with no attractive interactions between them...
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chem312ex1key - d A ---\ yc\'T --(' 3h '34 Partial...

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