103B PS 3 - CHEMISTRY 103B, Sections 1-4 Page 1 CHEMISTRY...

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Page 1 CHEMISTRY 103B, Sections 1-4 4/10/2008 12:15:17 AM http://www.chem.arizona.edu/~kellerp/ps-answers/PS3an/PS3an.htm CHEMISTRY 103B, Problem Set 3: 12 Points Answer Key Problem1. (fivepoints) Allparts of thisproblemreferto the reactioninvolvingA 3 ,B 2 ,C 2 , and A 3 BC fromthe firsttwo problemsets. Theequilibriumconstantcalculatedinproblem 2(b) of the second problemset. Assumea constanttemperatureinallparts of thisproblem. (a) Find[A 3 ] whenthe equilibriumconcentrationsof A 3 BC, B 2 , and C 2 are 0.150 mol/L, 0.0250 mol/L, and 0.0250 mol/L, respectively . (b) A solutionwas prepared by dissolvingA 3 BC inpure water. Whenthingsreached equilibrium , the concentrationof A 3 BC was 0.300 mol/L. Whatisthe equilibrium concentrationof A 3 ? Theconcentrationsof A 3 ,B 2 , and C 2 mustfitthe equilibriumconstantexpressionand must be 2x, x, and x, respectivelybecauseof the balancedequation . (c) More A
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This note was uploaded on 04/10/2008 for the course CHEM 103B taught by Professor Keller during the Spring '08 term at University of Arizona- Tucson.

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103B PS 3 - CHEMISTRY 103B, Sections 1-4 Page 1 CHEMISTRY...

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