The enthalpy of combustion at 25°C of H2, cyclohexane (C6H12) and cyclohexene (C6H10) are ?241, ?3920 and ?800 KJ / mole respectively. The heat of hydrogenation of cyclohexene is [BHU 2005]

The enthalpy of combustion at 25°C of H2, cyclohexane (C6H12) and cyc

1.	The enthalpy of combustion at 25°C of H2, cyclohexane (C6H12) and cyclohexene (C6H10) are ?241, ?3920 and ?800 KJ / mole respectively. The heat of hydrogenation of cyclohexene is [BHU 2005]
A.	? 121 KJ / mole
B.	+ 121 KJ / mole
C.	? 242 KJ / mole
D.	+ 242 KJ / mole
Answer» B. + 121 KJ / mole

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The enthalpy of combustion at 25°C of H2, cyclohexane (C6H12) and cyclohexene (C6H10) are ?241, ?3920 and ?800 KJ / mole respectively. The heat of hydrogenation of cyclohexene is [BHU 2005]

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