An endothermic reaction A→B has an activation energy 15 kcal/mole and the heat of reaction is 5 kcal/mole. The activation energy of the reaction B→A is

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20 kcal/mole

15 kcal/mole

10 kcal/mole

zero

answer is C.

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Detailed Solution

For an endothermic reactionEnergy of reactants < Energy of products A → B; ΔH = +5 Kcals & Ea = 15 KcalsEa'=15-5=10 Kcal/mole

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