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The standard enthalpy of formation (Delt...

The standard enthalpy of formation (`DeltaH_(f)^(@))` at `398` K fir methane , `CH_(4(g))` is `748 KJ 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 enthalpy of sublimation of carbon

B

The latent heat of vaporisation of methane

C

The first four ionisation energies of carbon and electron gain enthalpy of hydrogen

D

The dissociation energy of hydrogen molecule

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The correct Answer is:
A
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