Question

Defined catalyst and describe how it affects the reaction rate

Answer 1

It is a substance that increases the rate of a chemical reaction .....it provides an alternate pathway for the reaction that has a lower activation energy .... when activation energy is lower, more reactant particles have enough energy to react , so reaction occurs faster .....

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Answer 2

CATALYSTS MAY BE SOME ELEMENTS OR COMPOUNDS WHICH INCREASES THE RATE OF A REACTION.THEY SPEED UP THE REACTION BUT WILL NOT AFFECT ITS EQUILLIBRIUM.FOR EXAMPLE;Two molecules of hydrogen peroxide will produce two molecules of water and one molecule of oxygen. A catalyst of potassium permanganate can be used to speed up this process. Adding potassium permanganate to the hydrogen peroxide will cause a reaction that produces a lot of heat, and water vapor will shoot out.