17 Outline - 17 Outline Equilibrium: The Extent of Chemical...

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17 Outline Equilibrium: The Extent of Chemical Reactions 17.1 The Equilibrium State and the Equilibrium Constant At =lib rate(fwd) = rate(rev) No further net changes observed because changes in one direction are balanced  by changes in the other. =lib constant (K)= k(fwd)/k(rev) at a particular  temperature. The magnitude of K is an indication of how far a reaction proceeds  toward product at a given temperature. 1. small k- a rxn yields little product 2. large k- yields with very little reactant remaining 3. intermediate k- significant amounts of both reactant and product 17.2 the Reactant Quotient and the Equilibrium Constant Law of Chemical =lib (at a given temp, a chemical system reaches a state in  which a particular ratio of reactant and product concentrations has a constant  value, aka law of mass action) Reaction Quotient (Q)- product^2 / reactant (each raised to the power of their  coefficient) At =lib, k=q The ratio of the initial conc varies widely, but always give the same =lib conc The individual =lib conc are different in each case, but the ratios of these =lib 
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This note was uploaded on 04/28/2008 for the course CHEM 1111 taught by Professor Robertparson during the Fall '08 term at Colorado.

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17 Outline - 17 Outline Equilibrium: The Extent of Chemical...

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