<span>Catalysts increase the rate of reaction without being used up. They do this by lowering the activation energy needed. With a catalyst, more collisions result in a reaction, so the rate of reaction increases. Different reactions need different catalysts.</span>
A catalyst refers to a substance, which enhances the rate of a chemical reaction without chemically getting changed at the termination of the reaction. They never generate more product, they just generate the same concentration more briskly.
A catalyst functions by providing an alternative pathway to lower the activation energy. This signifies that more of the collisions occurring will exhibit the essential activation energy. Thus, there will be more effective collisions per second.
