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An exothermic reaction A —> B has an activation energy of 17kJ per mole of A.

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An exothermic reaction A → B has an activation energy of 17kJ per mole of A. The heat of the reaction is 40 kJ. Calculate the activation energy for the reverse reaction B → A.

(A) 60 kJ 

(B) 57 kJ 

(C) 75 kJ 

(D) 90 kJ

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Correct Option (B) 57 kJ 

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