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Q.

Which of the following statements is not correct?

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a

The catalyst changes not only the rate of forward reaction but also that of the backward reaction

b

The catalyst changes the value of equilibrium constant of the reaction

c

The mechanism of a catalytic reaction depends on the type of the catalyst, i.e. whether it is homogeneous or heterogeneous

d

Enzymes are essentially proteins which are responsible for the catalysing reactions occurring in living matter

answer is B.

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Detailed Solution

Changes in reactant and product concentrations have no impact on the equilibrium constant's magnitude. The equilibrium constant value for a reversible reaction hence stays the same if the reactant concentrations are doubled.

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