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The bond energies of C-C, C=C, H-H and C...

The bond energies of C-C, C=C, H-H and C-H linkages arev350, 600, 400 and 410 kJ per mol respectively. The heat of hydrogenation of ethylene is:

A

`-170 kJ mol^-1`

B

`-260 kJ mol^-1`

C

`-400 kJ mol^-1`

D

`-450 kJ mol^-1`

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The correct Answer is:
A
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