The enthalpy of gas phase trimerzation of one mole of gaseous formaldehyde in (KJ/mole)

Bond energies (kj/mole)
Given:
`{:(epsi_(c=o),epsi_(c-o),epsi_(c-H)),(700,360,410):}`

The electron gain enthalpy (in kJ/mole) of F, O, N and C respectively are :

The electron gain enthalpy (in kJ/mole) of F, O, N and C respectively are :

The enthalpy of combustion of propance (C_(3)H_(8)) gas in temes of given of geven data is , Bond energy (kJ/mol) underset(+x_(1))(.^(epsi)C-H)underset(+x_(2))(.^(epsi)O-O)underset(+x_(3))(.^(epsi)C-O)underset(+x_(4))(.^(epsi)O-H)underset(+x_(5))(.^(epsi)C-C) [Resonance energy of CO_(2) is -z KJ/mol and DeltaH_("vaporization")[H_(2)O(l)" is y " KJ//mol]

The enthalpy of combustion of propance (C_(3)H_(8)) gas in temes of given of geven data is , Bond energy (kJ/mol) underset(+x_(1))(.^(epsi)C-H)underset(+x_(2))(.^(epsi)O-O)underset(+x_(3))(.^(epsi)C-O)underset(+x_(4))(.^(epsi)O-H)underset(+x_(5))(.^(epsi)C-C) [Resonance energy of CO_(2) is -z KJ/mol and DeltaH_("vaporization")[H_(2)O(l)" is y " KJ//mol]

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"

Catenation power order is GeltSiltC then C-C,Si-Si and Ge-Ge bond energies are respectively (in kJ/mole):-

Catenation power order is GeltSiltC then C-C,Si-Si and Ge-Ge bond energies are respectively (in kJ/mole):-

The enthalpy of dissociation of gaseous methane and ethane are 400 and670KJ mol^(-1) respectively .Determine the amount of energy needed to break one mole of C-C bonds. A)270KJ B)70KJ C)200KJ D)240KJ