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Chpt%2016-4 - Catalysts Start Equilibrium 16.8 17.1 17.2...

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Catalysts & Start Equilibrium 16.8, 17.1 & 17.2
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16.8 Catalyst Catalyst speed up a reaction They do not make more product they just make it quicker Catalyst lower the activation energy of the reaction thereby making k larger k = A e -Ea/RT
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16.8 Catalyst Two types of catalyst Homogenous- in the same phase (s, l, g) as the reaction Heterogenous- in a different phase as the reaction Most heterogenous reactions are a solid that provide a set area for an interaction
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Intro to Equilibrium 17.1, 17.2
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Equilibrium When the rate of one process is equal to the rate of the reverse process a system is in dynamic equilibrium Why dynamic? What is changing? Reactants become products Products become reactants Both happen at the same rate The amount of reactants and the amount of products remain constant
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Equilibrium All chemical reactions will eventually reach equilibrium Equilibrium can be: Almost all reactants Almost all products Or somewhere in between Equilibrium describes how much of the products are formed
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