The heat of dissociation of benzene in isolated gaseous atoms is 5335 kJ/mol . The bond enthalpies C-C,C = C and C - H ` bonds are 347.3, 615 and 416.2 kJ respectively . Magnitude of resonance energy of benzene is

The bond energies of C-C, =C, H-H and C-H linkages are 350,600,400 and 410 kJ/mol resepectively. The heat of hydrogenation of ethylene is

The bond energies of C=C and C-C at 298 K are 590 and 331 kJ mol^(-1) , respectively. The enthalpy of polymerisation per mole of ethaylene is

The bond energies of C=C and C-C at 298 K are 590 and 331 kJ mol^(-1) , respectively. The enthalpy of polymerisation per mole of ethaylene is

The enthalpy of formation of enthane and benzene from the gaseous atoms are -2839.2 and -5506 kJ//mol respectively. Bond enthalpy of C = C bond is Given: Resonance energy of benzene =-23.68" kJ/mol" Bond enthalpy of C-H bond =411.0" kJ/mol"

Energy required to dissociate 4 g of gaseous H_(2) into free gaseous atoms is 872 kJ at 25^(@)C . The bond energy of H-H bond will be

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.