The enthalpy of combustion of `H_(2),` cyclohexene `(C_(6)H_(10))` and cyclohexane `(C_(6)H_(12))` are -241, -3800 and -3920 KJ per mol respectively . Heat of hydrogenation of cyclohexene is

The enthalpy of combustion of H_(2) , cyclohexene (C_(6)H_(10)) and cyclohexane (C_(6)H_(12)) are -241 , -3800 and -3920KJ per mol respectively. Heat of hydrogenation of cyclohexene is

The standard enthalpy of combustion at 25^(@)C of hydrogen, cyclohexene (C_(6)H_(10)) , and cyclohexane (C_(6)H_(12)) are -241,-3800 , and -3920 kJ mol^(-1) repectively. Calculate the heat of hydrogenation of cyclohexene.

The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene (C_(6)H_(10)) , and cyclohexane (C_(6)H_(12)) are -241,-3800 , and -3920 kJ mol^(-1) repectively. Calculate the heat of hydrogenation of cyclohexane.

The enthalpy of combustion at 25^(@)C of H_(2)(g) , cyclohexane and cyclohexene are -241, 3920 and -3717 kJ "mole"^(-1) respectively. The heat of hydrogenation of cyclohexene is ( Kcal/mole) approximate integer:

The standard molar enthalpies of formation of cyclohexane (I) and benzene(I) at 25^(@)C are -156 and +49 KJ mol^(-1) respectivelyl. The standard enthalpy of hydrogentation of cyclohexene (I) at 25^(@) is -119 KJ mol^(-1) . Use these data to estimate the magnitude of the resonance energy of benzene.

The standard molar enthalpies of formation of cyclohexane (I) and benzene(I) at 25^(@)C are -156 and +49 KJ mol^(-1) respectivelyl. The standard enthalpy of hydrogentation of cyclohexene (I) at 25^(@) is -119 KJ mol^(-1) . Use these data to estimate the magnitude of the resonance energy of benzene.

The heats of combustion of C_(2)H_(4), C_(2)H_(6) and H_(2) gases are -1409.5 KJ, -1558.3 KJ and -285.6 KJ respectively. The heat of hydrogenation of ethene is

The heats of combustion of C_(2)H_(4(g)), C_(2)H_(6(g)) and H_(2(g)) are -1409.4,-1558.3 and -285.6 kJ respectively. Calculate heat of hydrogenation of ethylene.

The molar enthalpies of combustion of C_(2)H_(2)(g), C("graphite") and H_(2)(g) are -1300,-394 , and -286 kJ mol^(-1) , respectively. The standard enthalpy of formation of C_(2)H_(2)(g) is

The heat of combustion of CH_(4)(g), C_(2)H_(6)(g) and H_(2)(g) are -890.3, -1559,7 and -285.9 kJ mol^(-1) , respectively. Which of these fuels is most efficient?