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Question

The standard enthalpy of combustion at 25 C of hydrogen, cyclohexene (C6H10) and cyclohexane (C6H12) are 241, 3800 and 3920 KJ/mole respectively. Calculate the heat of hydrogenation of cyclohexene.

A
+ 121 KJ/mole
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B
+ 242 KJ/mole
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C
- 242 KJ/mole
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D
- 121 KJ/mole
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Solution

The correct option is D - 121 KJ/mole
C6H10(g)+H2(g)C6H12(g)

ΔH=?


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