Effect of catalyst on the rate of reaction

A catalyst is a substance which increase the speed or rate of reaction by providing an alternative pathway, involving less activation requirement

When we provide catalyst, activation energy requirement is less.

Characters tics of a catalyst & catalyzed reaction

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1. Small amount of catalyst is sufficient to bring large change in rate of reaction.

2. Catalyst can’t initiate, it only accelerate a reaction.

3. It doesn’t change the free energy change (ΔG)

4. It doesn’t alter the enthalpy (ΔH) of a reaction.

5. Catalyst is regenerated after completion of reaction.

6. Catalyst doesn’t disturb the equilibrium.