Which one of the following statements is not correct?

The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium.

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Enzymes catalyse mainly bio-chemical reactions.

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Coenzymes increase the catalytic activity of enzyme.

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Catalyst does not initiate any reaction.

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Solution

The correct option is A The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium.
Catalyst does not change the value of equilibrium constant as they affect forward as well as backward reactions equally.

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Similar questions

Q. Assertion :A catalyst increases the rate of reaction without itself undergoing any permanent chemical change. Reason: A catalyst changes the Gibbs energy

(△ G)

of the reaction and equilibrium constant of the reaction.

Q. Assertion :The catalyst does not alter the equilibrium constant. Reason: For the catalysed reaction and uncatalysed reaction

Δ H

remains same and equilibrium constant depends on

Δ H

Which of the following statement is not correct for the catalyst?
(a) It catalysts the forward and backward reactions to the same extent
(b) It alters $Δ G$ of the reaction
(c) It is a substance that does not change the equilibrium constant of the reaction
(d) It provides an alternate mechanism by reducing activation energy between reactants and products

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

Q. Assertion :A catalyst does not influence the value of equilibrium constant. Reason: Catalyst influence the rate of both forward and backward reactions equally.

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Which one of the following statements is not correct?

The correct option is A The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium.Catalyst does not change the value of equilibrium constant as they affect forward as well as backward reactions equally.

The correct option is A The value of equilibrium constant is changed in the presence of a catalyst in the reaction at equilibrium.
Catalyst does not change the value of equilibrium constant as they affect forward as well as backward reactions equally.