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HardChemistry
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The enthalpy of combustion at 25°C of H₂, cyclohexane (C₆H₁₂) and cyclohexene (C₆H₁₀) are − 241, −3920 and −3800 kJ/mol respectively. The heat of hydrogenation of cyclohexene is -
A
−121 kJ/mol
B
+121 kJ/mol
C
−242 kJ/mol
D
+242 kJ/mol
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