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Questions  >>  JEEMAIN and NEET  >>  Physics  >>  Class11  >>  Thermodynamics
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The standard enthalpy of formation (ΔHf)at298K for methane, CH4(g), is -74.8 kJ/mol. The additional information required to determine the average energy for CH bond formation would be

(A)the dissociation energy of H2 and enthalpy of sublimation of carbon.(B)latent heat of vaporization of methane(C)the first four ionization energies of carbon and electron gain enthalpy of hydrogen.(D)the dissociation energy of hydrogen molecule

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