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An exothermic reaction A rarr B has an ...

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

A

23 kJ

B

97 kJ

C

57 kJ

D

17 kJ

Text Solution

Verified by Experts

The correct Answer is:
C
(C ) For exothermic reaction
`E_(a)` (backward ) `= E_(a) ` (forward) + Heat of reaction ( magnitude only ) =17+40=57 kJ
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