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Catalysts and Rate of Reaction

Addition of a...

Question

Addition of a catalyst in a reaction does not alter:

A

Rate of reaction

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B

Threshold energy

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C

Equilibrium constant

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D

Activation energy

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Solution

The correct option is C Equilibrium constant
• A catalyst does not alter $K_{p}$ or $K_{c}$ values.
• A catalyst increases rate of a reaction as it lowers threshold energy barrier thus it lowers activation energy for both the forward and the backward reactions.

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The addition of a catalyst during a chemical reaction alters which of the following quantities?

Q. Assertion :Catalyst is a substance which takes part in a chemical reaction, undergoes chemical change and alters the rate of a reaction Reason: Catalyst is a substance which does not take part in a chemical reaction, but changes the rate of reaction

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