(C) catalyst increases the rate of both forward and backward reactions equally by lowering the activation energy. It does not affect the position of e

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For $A_{(g)} \rightleftharpoons B_{(g)}$,$K_c$ is $10^{-2}$. If this reaction is carried out in the presence of a catalyst,the value of $K_c$ decreases.

(C) catalyst increases the rate of both forward and backward reactions equally by lowering the activation energy. It does not affect the position of equilibrium or the equilibrium constant $(K_c)$. Therefore,the statement that the value of $K_c$ decreases in the presence of a catalyst is incorrect.

Class 11 Chemistry 6-1.Equilibrium (Chemical Equilibrium)Equilibrium state and Characteristics of K

Medium

Which of the following is not a characteristic property of chemical equilibrium?

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A
Rate of forward reaction is equal to rate of backward reaction at equilibrium.
B
After reaching the chemical equilibrium,the concentrations of reactants and products remain unchanged with time.
C
For $A_{(g)} \rightleftharpoons B_{(g)}$,$K_c$ is $10^{-2}$. If this reaction is carried out in the presence of a catalyst,the value of $K_c$ decreases.
D
After reaching the equilibrium,both forward and backward reactions continue to take place.