Question

In any reaction, catalyst
(A) retards the rate of reaction
(B) increases the rate of reaction
(C) both increases and decreases the rate of reaction
(D) none of these​

Answer 1

Answer:

Increases the rate of reaction

Explanation:

Most catalysts work by lowering the 'activation energy' of a reaction. This allows less energy to be used, thus speeding up the reaction. The opposite of a catalyst is an inhibitor. Inhibitors slow down reactions.

Answer 2

Catalyst increases the rate of reaction

Explanation:

A catalyst is a substance which increases the rate of a reaction by taking the reaction through a different path which involves lower activation energy and thus more molecules can cross the energy barrier and more molecules convert to products.

The catalyst itself does not take part in the chemical reaction and is regenerated as such at the end.

Inhibitors decrease the rate of reaction.

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