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Again just a heads up i only need a sentence or so :)
It decreases the activation energy of both the forward and reverse reactions, allows your reaction to proceed faster but does not affect the equilibrium.
Does that make sense?
catalyst reduces activation energy , increases both forward and backward reaction depending on equation
I agree with @amb
it has to have the same affect for both the forward and reverse reactions
In this picture you see two things, a solid line for the uncatalyzed reaction and a dashed line for the catalyzed reaction.
okay thank you both so much :) since @Photon336 has already been given a medal i have given @amb a meadal.
the catalyst lowers the Ea, and makes the reaction go faster but overall it doesn't do anything other than that.
in certain reactions the catalyst is altered in the process of the reaction but it's always regenerated afterwards, so all you need to know is that it lowers Ea that's basically it.
"so net effect is that catalyst isn't changed itself"
yeah i agree with Photon336
Although It is easy to remember that a Catalyst lowers the Activation energy (I remember it this way too), the catalyst actually finds a different reaction pathway that has a lower activation energy. So the catalyst doesn't actually lower the Ea.