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Calculate the enthalpy of the following ...

Calculate the enthalpy of the following reaction :
`CH_2= CH_2 (g) + H_2(g) to CH_3 - CH_3(g)`
The bond energies of C-H, C-C, C=C and H-H bonds are 414, 347, 615 and 435 kJ `mol^(-1)` respectively.

A

`+125kJ`

B

`-12.5 kJ`

C

`-125 kJ`

D

`+12.5 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
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