1.

The standard enthalpy of formation (DeltaH_(f)^(@)) 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-Hbond formation would be

Answer»

The dissociation energy of `H_(2)` and enthalpy of sublimation of carbon
Latent HEAT of vapourization of methane
The first four ionization ENERGIES of carbon and electron gain enthalpy of hydrogen
The dissociation energy of hydrogen MOLECULE, `H_(2)`

Answer :A


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