Chemistry / Unit 10 Chem 1792 short lesson, about 20 seconds
Catalyst Has No Effect on Equilibrium Position
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The idea
A catalyst speeds forward and reverse rates equally, changing how fast a system reaches equilibrium but never changing K or the equilibrium concentrations.
In practice
A catalyzed and uncatalyzed version of the same reaction settle at identical concentrations, the catalyzed one sooner.
Where people slip
A catalyst has no term in the K or Q expression, so it has nothing there to move.
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