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The activation energy of exothermic reac...

The activation energy of exothermic reaction `ArarrB` is 80 kJ `"mol"^(-1)` . The heat of reaction is `200 kJ "mol"^(-1)`. The activation energy for the reaction`Brarra` ( in kJ/mol) will be :

A

80

B

120

C

40

D

280

Text Solution

Verified by Experts

The correct Answer is:
D
`Delta H=(E_(a))_(f) -(E_(a))_(b)`
`-200=80-(E_(a))_(b) rArr (E_(a))_(b) =280" kJ mol"^(-1)`
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