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The standard enthalpy of formation (Delt...

The standard enthalpy of formation `(Delta_(f)H^(@))` at `298K ` for methane `(CH_(4(g)))` is `-74.8kJ mol^(-1)`. The additional information required to determine the average energy for `C-H` bond formation would be `:`

A

the dissociation energy of `H_(2)` and enthelpy of sublimation of carbon.

B

latent heat of vaporisation of methane.

C

the first four ionization energies of carbon and electron gain enthlpy of hydrogen.

D

the dissociation energy of hydrogen molecule, `H_(2)`

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A
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