Catalysts in Kc

[Henry_Phan_4L]

Why doesn't a catalyst affect the equilibrium constant?

[Lauryn Shinno 2H]

Catalysts don't affect Kc because they only make reactions faster. They don't change the concentrations of the reactants or products.

[Yvonne Du]

They speed up the process but do not change the concentrations.

[Sheridan Slaterbeck 1J]

Catalysts change the speed at which the reaction occurs, not the components.

[Isabelle Fontanilla 1I]

Adding catalysts does not change the equilibrium because all it does is speed up the rate at which the system reaches equilibrium by lowering the activation energy required to proceed with the reaction(forward reaction rate and reverse reaction rate are changed equally).
Also, catalysts do not change the equilibrium constant because their concentrations remain the same from the beginning to the end of the reaction(they get used up and replaced automatically).

[Jaqueline Monreal 2L]

catalysts only change how fast a reaction is performed but doesnt change any of the concentrations

[RachelCheung1A]

They increase the rate of the reaction but does not cause any permanent chemical change in the reaction, so the concentrations are the same and equilibrium is the same