159_spring_08_chapt_17_equilibriu

159_spring_08_chapt_17_equilibriu - Chapter 17 Equilibrium:...

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Chem 160 Ch 17 Equil 1 Chapter 17 Equilibrium: The Extent of Chemical Reactions
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Chem 160 Ch 17 Equil 2 Equilibrium: The Extent of Chemical Reactions Equilibrium: The Extent of Chemical Reactions 17.1 The Equilibrium State and the Equilibrium Constant 17.2 The Reaction Quotient and the Equilibrium Constant 17.3 Expressing Equilibria with Pressure Terms: Relation between K c and K p 17.4 Reaction Direction: Comparing Q and K 17.5 How to Solve Equilibrium Problems 17.6 Reaction Conditions and the Equilibrium State: LeChatelier’s Principle ((pp. 561-568)
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Chem 160 Ch 17 Equil 3 Dynamic Nature of Equilibrium Equilibrium involves opposing processes occurring at equal rates The reactant and product concentrations remain constant
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Chem 160 Ch 17 Equil 4 Sample Problem 17.3 Determining the Equilibrium Constant for an Equation Multiplied by a Common Factor PROBLEM: For the ammonia formation reaction N 2 ( g ) + 3H 2 ( g ) 2NH 3 ( g ) SOLUTION: the equilibrium constant, K c , is 2.4x10 -3 at 1000K. If we change the coefficients of the equation, which we’ll call the reference (ref) equation, what are the values of K c for the following balanced equations? (a) 1/3 N 2 ( g ) + H 2 ( g ) 2/3 NH 3 ( g ) (b) NH 3 ( g ) 1/2 N 2 ( g ) + 3/2 H 2 ( g ) PLAN: Compare each equation to the reference. Keep in mind that changing the coefficients will be reflected in a power change in K c and a reversal of the equation will show up as an inversion of K c . (a)
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159_spring_08_chapt_17_equilibriu - Chapter 17 Equilibrium:...

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