1.

The standard enthalpy of formation (Delta_(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 -

Answer»

latent HEAT of VAPORIZATION of methane
the first four ionization energies of carbon and electron gain enthalpy of hydrogen
the dissociation energy of hydrogen molecule `H_(2)`
The dissociation energy of `H_(2)` and enthalpy of SUBLIMATION of carbon

Answer :D


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