In which of the following, E(a) for back...

In which of the following, `E_(a)` for backward reaction is greater than `E_(a)` for forward reaction?

`Aoverset(E_(a)-50"kcal")rarrB,DeltaH=-10` kcal

`Aoverset(E_(a)-50"kcal")rarrB,DeltaH=+10` kcal

`Aoverset(E_(a)-60"kcal")rarrB,DeltaH=+20` kcal

all of the above

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Verified by Experts

The correct Answer is:

`DeltaH=(E_(a))_(f)-(E_(a))_(b)`
`(E_(a))_(b)=(E_(a))_(f)-DeltaH=50+10=60"kcal"`

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