chapter 15 Equilibrium

chapter 15 Equilibrium - CHEMISTRY The Central Science 9th...

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Chapter 15 Chapter 15 Chemical Equilibrium Chemical Equilibrium CHEMISTRY The Central Science 9th Edition
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2 The Concept of Equilibrium The Concept of Equilibrium
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Using the collision model: 2 2 4 Collision Model: Understanding Collision Model: Understanding Equilibrium Equilibrium
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The point at which the rate of decomposition: 2 2 4 Dynamic Equilibrium Dynamic Equilibrium
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2 4 Expressing Equilibrium Reactions Expressing Equilibrium Reactions N 2 O 4 ( g ) 2NO 2 ( g ) A B
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The Equilibrium Constant The Equilibrium Constant No matter the starting composition of reactants and products, the same ratio of concentrations is achieved at equilibrium.
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Defining the Equilibrium Constant Defining the Equilibrium Constant For a general reaction in the gas phase the equilibrium constant expression is a A + b B c C + d D b a d c eq P P P P K B A D C =
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The Equilibrium Constant The Equilibrium Constant For a general reaction the equilibrium constant expression for everything in solution is a A + b B c C + d D [ ] [ ] [ ] [ ] b a d c eq K B A D C =
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Class Practice Problem: Class Practice Problem: Writing Equilibrium Expressions Writing Equilibrium Expressions 3 2
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Properties of the Equilibrium Properties of the Equilibrium Constant Constant eq
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Forward Equilibrium Direction Forward Equilibrium Direction An equilibrium can be approached from any direction. Example: Has N 2 O 4 ( g ) 2NO 2 ( g ) 46 . 6 4 2 2 O N 2 NO = = P P K eq
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In the reverse direction: Thus, Reverse Equilibrium Direction Reverse Equilibrium Direction 46 . 6 1 155 . 0 2
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chapter 15 Equilibrium - CHEMISTRY The Central Science 9th...

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