The standard enthalpy of formation ∆_f H^{∘} at 298 {\K} for methane, {\CH}_4( {\g}), is -74.8 {\kJ} {\mol}^{-1}. The additional information required to determine the average energy for {\C}- {\H} bond formation would be

Question

The standard enthalpy of formation ∆_f H^{∘} at 298  {\K} for methane,  {\CH}_4( {\g}), is -74.8  {\kJ}  {\mol}^{-1}. The additional information required to determine the average energy for  {\C}- {\H} bond formation would be

Examsnet · Accepted Answer

Correct Answer is : the dissociation energy of H2 and enthalpy of sublimation of carbon

AIEEE 2006 Solved Paper