worksheet_4 - Week 6 10/31/11 Activity Chemistry 142D...

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Week 6 10/31/11 Activity Chemistry 142D Autumn 2011 Work together in groups of 3 or 4) Names Quiz Section _________ Graded____ ____________________________ _______________________________ ____________________________ _______________________________ Each group will be assigned one of three problems. If one has a graphing calculator it would be nice to share with the class what a plot of log(Q/K) as a function of the reaction looks like and identify equilibrium. 1) Find the equilibrium constant for a reaction when the total pressure is given. Consider a heterodimer dissociation: AB ! A + B such as PCl 5 (g) ! PCl 3 (g) + Cl 2 (g) . The equilibrium constant is 0.24 P K ! atm. Problem 1: Initially: P PCl5 = 0.030 Atm, P PCl3 =0.0Atm, P Cl2 =0.0Atm Problem 2: Initially: P PCl5 = 0.010 Atm, P PCl3 =0.020Atm, P Cl2 =0.020Atm Problem 3: Initially: P PCl5 = 0.0 Atm, P PCl3 =0.020Atm, P Cl2 =0.040Atm 1A) Given an initial condition define the extent of the reaction. How far can the reaction go in either the
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worksheet_4 - Week 6 10/31/11 Activity Chemistry 142D...

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