The bond energy of `C-C,C=C`,H-H and C-H bond are 350 ,600,400 and `410 KJ mol^(-1)` respectively calculate the change in enthalpy of the hydrogenation reaction of ethylene.

Standard enthalpy of combustion of CH_(4)(g) " is " 802.8 " kJ mol"^(-1) . If the bond dissociation energies of C-H, O=O and O-H bonds are 416.2, 493.7 and 464.4 " kJ mol"^(-1) respectively then calculate the bond dissociation energy of C=O bond.

Bond dissociation energy ofC-C, C = C, H-H&C-Hare 300, 550,350, 400 Kj mol^-1 Calculate heat of hydorgenation of ethylene.

The melting point and boiling point of sulphur dioxide are -75^(@)C and -10^(@)C respectively. If the change in enthalpy of fusion and vaporisation of sulphur dioxide are 7.4 " kJ mol"^(-1) and 25.2 " kJ mol"^(-1) respectively, calculate the change in entropy of fusion and vaporisation of SO_(2) ?

At 25^(@)C , standard enthalpy of combustion of combustion of hydrogen, cyclohexene (C_(6)H_(10)) and cyclohexane (C_(6)H_(12)) are -241, -3800 and -3920 " kj mol"^(-1) respectively. Determine the heat of hydrogenation of cyclohexene.

In water, the first and second O-H bond disociation enthalies are 502 and 427 kJ mol^(-1) respectively. Determine the value of bond enthalpy of O-H bond.

Mention the values of C-C-C,C-C-H and H-C-H bond angles in propane molecule.

The heat of reaction for the following reaction (DeltaH^(0)) at 25^(@)C temperatue is -1368 kJ: C_(2)H_(5)OH(l)+3O_(2)(g) to 2CO_(2)(g)+3H_(2)O(l) If the enthalpy of formation of CO_(2)(g) and H_(2)O(l) at 25^(@)C are -393.5 and -285.8 kJ*mol^(-1) respectively, then what will be the value of the standard enthalpy of formation of C_(2)H_(5)OH(l) ?

At 25^(@)C the standard heat of formation of liquid H_(2)O is -286.0 kJ*mol^(-1) . Calculate the change in standard internal energy for this formation reaction.

If the bond energy of C-H bond is +416.18 kJ*mol^(-1) , then what will be the enthalpy of formation of C-H bond?