University of Wisconsin, W... a search saplinglearning.com 2478013 My Assignment

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University of Wisconsin, W... a search saplinglearning.com 2478013 My Assignment Attempts Score O 5/8/2016 11:00 PM A 54.5/100 4/30/2016 05:27 PM Gradebook Print Periodic Table Calculator 10 50 Question 19 of 24 Map 11 100 12 100 For a gaseous reaction, standard conditions are 298 K and a partial pressure of 1 atm for all species. For the reaction 13 100 2CH the standard change in Gibbs free energy is AG 69.0 kJ/mol. What is AG for this reaction at 298 K when 14 98 the partial pressures are 15 100 Pr. 0.200 atm, P. 0.250 atm and P 0.650 atm 16 Numbe kJ mol AG 17 18 19 20 21 Previous Give Up & View Solution Check Answer Next Exit Hint 24 Copyright 2011 2016 Sapling Learning, Inc. 133 about us careers partners privacy policy erms of use Contact us help Resources Assignment Informa Available From 4/2 5/8 Due Date: Points Possible 100 Grade Category: Gra Description Policies: Ho You can check your ans You can view solutions up on any question You can keep trying to a you get it right or give u You lose 5% of the point in your question for eac answer O Help With This Topic Web Help & Videos Technical Support ar

Explanation / Answer

change partial pressure to concentrations

P = MRT

M = P/(RT)

1/RT = 1/0.082*298 = 0.040923

so

KK = CH4^2 / (C2H6)(H2)

Q = (0.65*0.040923)^2 / ((0.040923*0.2)(0.040923*0.25)) = 8.45

G = G° + RTln(Q)

G = -69000 + 8.314*298*ln(8.45)

G = -63712.448 J/mol = --63.712 kJ /mol

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