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Q.

A catalyst lowers the activation energy from 20 kJ mol1to 15 kJ mol1 of the forward direction of the reaction AB. Which of the following statement regarding the reaction is correct?

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a

Enthalpy ofreaction is increased by 5 kJ mol1

b

Activation energy of the backward direction is increased by 5 kJ mol1

c

Equilibrium constant of the reaction is decreased

d

Activation energy of the backward direction is decreased by 5 kJ mol1

answer is B.

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Detailed Solution

Energy of backward reaction is also decreased by 5 kJ mol1 without affecting the value of ΔH and Keq of the reaction.

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