Lecture6 - Equilibrium Characteristics, Equilibrium...

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Equilibrium Characteristics, Equilibrium Constant Reading: 13.1 to 13.4 Homework: Page 629 # 11, 13, 21, 23, 25, 27, 29, 31, 35,37
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Ends of Reactions Completion - limiting reactant used up; typical in reactions of solids, liquids Equilibrium - typical in gaseous, aqueous systems
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Equilibrium Forward reaction rate equals reverse reaction rate Concentrations of reactants and products are constant
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cis trans Product favored equilibrium Effect of catalyst?
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A B Show reactant favored equilibrium Show effect of catalyst Time [ ]
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Independence of Approach
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Equilibrium Constant, K a A + b B ↔ c C + d D K c = [C] c [D] d / [A] a [B] b Products over reactants Coefficients become exponents Multiple reactants or products multiplied
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K Expression? Fe 3+ (aq) + SCN - (aq) FeSCN 2+ (aq) 2 NO 2 (g) N 2 O 4 (g) 2 HBr(g) H 2 (g) + Br 2 (g) N 2 (g) + 3 H 2 (g) 2 NH 3 (g)
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Heterogeneous Equilibrium Pure liquids, pure solids omitted from K expression Gases, solutions included in K expression
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Zn(OH)
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Lecture6 - Equilibrium Characteristics, Equilibrium...

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