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Last updated 1:14 PM on 5/5/23
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18 Terms
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Dynamic equilibrium
A closed system with equal rate and concentration of forward and reverse reactions.
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Closed system
matter and energy can’t be lost or gained
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Open system
Matter and energy can escape
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Effect of pressure on equilibrium
increase = equilibrium shifts to side with less volume/number of molecules
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Effect of concentration on equilibrium
increase = forward reaction is favored
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Effects of temperature on equilibrium
increase = endothermic reaction is favored
only factor effecting Kc
only factor effecting Kc
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effect of Catalyst on equilibrium
Increase rate of both reactions
No effect on equilibrium
No effect on equilibrium
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Kc > 1
concentration of product is greater
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What factor effects Kc?
Temperature
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What happens to Kc if you reverse the equation?
It becomes the reciprocal
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What is Q?
Ratio of products and reactants for a reaction that hasn’t reached equilibrium
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What is the relationship between Q and Kc at equilibrium?
Q=Kc
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What happens if Q>Kc?
The reverse reaction is favored
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What happens if Q
The forward reaction is favored
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Le Chatelier principle
If a change is made to a system at dynamic equilibrium, the position of the equilibrium moves to minimise this change
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What happens to Kc when reaction coefficients are doubled?
Kc is squared
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What happens to Kc when reaction coefficients are halved?
Kc is square rooted
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What happens to Kc if 2 reactions are added?
The Kc values are multiplied
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