MHT CET Chemistry question

Chemistry Thermodynamics MHT CET

The standard enthalpy of formation () at 298 K for methane, is kJ/mol. The additional information required to determine the average energy for C H bond formation would be

(A)The dissociation energy of and enthalpy of sublimation of CCorrect
(B)Latent heat of vapourisation of methane
(C)The first four ionisation energies of carbon and electron gain enthalpy of hydrogen
(D)The dissociation energy of molecule

Answer: (A)

Solution

Forming from graphite and requires atomising both, so the sublimation enthalpy of carbon and the dissociation energy of are both needed to get 4 C-H

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Question ID VK-064656