1.

A catalyst :

Answer»

Increases the average kinetic energy of reacting molecules
DECREASES the activation energy
Alters the reaction mechanism
Increases the FREQUENCY of COLLISIONS of reacting SPECIES

Solution :A catalyst provides the path of LOWER activation energy . The catalyst reacts with the reactions to form an intermediate of low activation energy . The intermediate then decomposes to form the product along with regeneratoin of catalyst . Thus the reaction mechanism changes completely .


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