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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 enthalpy of sublimation of carbon

B

The letent 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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A
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