The bond energy of C=O if `DeltaH_(f)^(@)(CO_(2))`=`390 kJ`, `DeltaH_("sublimation")^(@)`(Graphite)=720 kJ, O=O bond energy = 490 kJ and renonce energy `(CO_2)`=36 kJ :

The S-S bond energy is if DeltaH_(f)^(@)(E_(t)-S-E_(t))=-147kJ//mol,DeltaH_(f)^(@)(E_(t)-S-S-E_(t))=-202kJ//mol and DeltaH_(f)^(@)S(g)=+223 kJ//mol:

The S-S bond energy is if DeltaH_(f)^(@)(E_(t)-S-E_(t))=-147kJ//mol,DeltaH_(f)^(@)(E_(t)-S-S-E_(t))=-202kJ//mol and DeltaH_(f)^(@)S(g)=+223 kJ//mol:

Find bond enthalpy of C=O (in kJ/mol) using following information : DeltaH_("atomisation")[C(s)]=700 kJ/mol DeltaH_(f)[CO_(2)(g)]=-400 kJ/mol BE_(o=o=500 kJ/mol Resonance energy of CO_(2)=-150 kJ/mol

Calculate the resonance energy of N_(2)O from the following data: DeltaH_(1)^(@) of N_(2)O = 82 kJ "mole"^(-1) . Bond energies N=N = 946 kJ "mole"^(-1) N=N = 418 kJ "mole"^(-1) O=O = 498 kJ "mole"^(-1) N=O = 607 kJ "mole"^(-1)

Calculate the resonance energy of N_(2)O from the following data: DeltaH_(1)^(@) of N_(2)O = 82 kJ "mole"^(-1) . Bond energies N=N = 946 kJ "mole"^(-1) N=N = 418 kJ "mole"^(-1) O=O = 498 kJ "mole"^(-1) N=O = 607 kJ "mol"^(-1)

Calculate DeltaH_("combustion"^(@) of C_("graphite") if DeltaH_(f)^(@) of ace tone =-250 kJ , Delta_("combustion")^(@) of acetone =-1760 kJ , DeltaH_("combustion")^(@) " of "H_(2)(g)=-280 kJ