The activation energy of exothermic reaction $A \to B$ is $80\;kJ\;{\rm{mo}}{{\rm{l}}^{ - 1}}$. The heat of reaction is $200\;kJ\;\;{\rm{mo}}{{\rm{l}}^{ - 1}}$. The activation energy for the reaction $B \to A$ (in $kJ\;\;{\rm{mo}}{{\rm{l}}^{ - 1}})$ will be

NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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The activation energy of exothermic reaction

A \to B

80\;kJ\;\mathrm{mo}{\mathrm{l}^{ - 1}}

. The heat of reaction is

200\;kJ\;\;\mathrm{mo}{\mathrm{l}^{ - 1}}

. The activation energy for the reaction

B \to A

(in

kJ\;\;\mathrm{mo}{\mathrm{l}^{ - 1}})

will be

View answer and explanation

Correct option: D

280

Option D (280) is correct because the activation energy for the reverse reaction is the sum of the activation energy for the forward reaction and the heat of reaction.

NEET UG CHEMISTRY MCQ: CHEMICAL KINETICS

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