230_Sp10_L16_post - CHEM 230 Sp10 Lecture 16 Chapter 9:...

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CHEM 230 Sp10 Lecture 16 Chapter 9: Chemical Equilibria Equilibrium Snapshot: 1) Equilibrium and K 2) K manipulations Session ID 230
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Equilibrium Equilibrium does NOT mean that ALL things are equal. The rate at which products are formed from reactants and the rate at which reactants are formed from products are equal . A reaction in equilibrium is going forward and backward at the same rate. (dynamic) All reactants and products are present and actively interchanging http://www. chm . davidson .edu/ronutt/che115/EquKin/EquKin. htm
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Rate of a Reaction For a simple reactions A B, rate = k[A]. Most reactions slow down as they proceed and as the concentration/s of the reactant/s decreases the rate approaches zero. k is the rate constant which varies with individual reaction
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Reactions in equilibrium have both a significant forward and reverse rate of reaction. A B When equilibrium is reached, the rates of the forward and reverse reaction are equal AND are NOT equal to 0. Forward reaction:
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230_Sp10_L16_post - CHEM 230 Sp10 Lecture 16 Chapter 9:...

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