Project 7 for 20100

Project 7 for 20100 - temperatures? a) PCl 3 (g) + Cl 2 (g)...

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UNIVERSITY CHEMISTRY 2 Spring, 2010 Project #7 NAMES 1. Calculate the entropy change in J/mol•K for the reaction: N 2 (g) + 3 H 2 (g) → 2 NH 3 (g). Given: The total entropy change for the universe is 110 J/mol•K and the enthalpy change for the reaction is - 92.2 kJ/mol at 25 o C. 2. Consider the reaction below: 2 NO(g) + O 2 (g) → 2 NO 2 (g) Calculatea) ΔH˚ at 25˚C for this reaction b) ΔS˚ at 25˚C for this reaction c) ΔG˚ at 25˚C for this reaction d) the K c for this reaction at 25 o C Substance: ΔH˚ f : S˚:________ NO 2 (g) 33.2 kJ/mol 239.9 J/mol K NO(g) 90.29 kJ/mol 210.65 J/mol K O 2 (g) ----- 205.0 J/mol K
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UNIVERSITY CHEMISTRY 2 Spring, 2010 Project #7 NAMES 1. Which of the following processes would be spontaneous at all
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Unformatted text preview: temperatures? a) PCl 3 (g) + Cl 2 (g) PCl 5 (g) H o = -87.9 kJ b) 2 NH 3 (g) N 2 (g) + 3 H 2 (g) H o = +92.2 kJ c) 2 N 2 O(g) 2 N 2 (g) + O 2 (g) H o = -164.1 kJ d) H 2 O(g) + O 2 (g) H 2 O 2 (g) H o = +105.5 kJ 2. Consider the reaction below: 4 KClO 3 (s) 3 KClO 4 (s) + KCl(s) Calculate a) H at 25C for this reaction b) S at 25C for this reaction c) G at 25C for this reaction d) the K c for this reaction at 25 o C Substance: H f : S:________ KClO 3 (s) -397.7 kJ/mol 143.1 J/mol K KClO 4 (s) -432.8 kJ/mol 151.0 J/mol K KCl(s-436.7 kJ/mol 82.6 J/mol K...
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This note was uploaded on 03/29/2010 for the course CHEM 1123 taught by Professor Paul during the Spring '06 term at Arkansas.

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Project 7 for 20100 - temperatures? a) PCl 3 (g) + Cl 2 (g)...

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