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Calculate the enthalpy of hydrogenation ...

Calculate the enthalpy of hydrogenation of `C_2 H_(4(g))`, given that the enthalpy of formation of ethane and ethylene as `-30.2`kcal and `+12.5`kcal respectively.

A

`-4.8`kcal

B

`+7.7`kcal

C

`-42.7`kcal

D

`-7.7`kcal

Text Solution

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The correct Answer is:
C
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