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If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H...

If `Delta_(f)H^(@)(C_(2)H_(4))` and `Delta_(f)H^(@)(C_(2)H_(6))` are `x_(1)` and `x_(2)` kcal `mol^(-1)`, then heat of hydrogenation of `C_(2)H_(4)` is :

A

`x_(1) + x_(2)`

B

`x_(1) - x_(2)`

C

`x_(2) - x_(1)`

D

`x_(1) + 2x_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
`C_(2)H_(4)(g)+H_(2)(g)rarrC_(2)H_(6)(g)`
`Delta_(r )H=x_(2)-x_(1)`
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