Consider the following data: Δ f H^ (methane, g) =-X kJ mol ⁻¹ Enthalpy of sublimation of graphite =Y kJ mol ⁻¹ Dissociation enthalpy of H₂=Z kJ mol ⁻¹ The bond enthalpy of C - H bond is given by:

Chemical Thermodynamics: JEE Main 2026 Chemistry question

JEE Main 2026 · 21 Jan, Evening shift · Q63

JEE Main 202621 Jan, Evening shiftChemistryMediumChemical Thermodynamics84× since 2002

Consider the following data :

\Delta_fH^\ominus

(methane, g)

=-X

kJ mol

^{-1}

Enthalpy of sublimation of graphite

=Y

kJ mol

^{-1}

Dissociation enthalpy of

\mathrm{H_2}=Z

kJ mol

^{-1}

The bond enthalpy of C

-

H bond is given by :

JEE Main 2026 Chemical Thermodynamics Question with Solution (21 Jan Evening shift, Q63) | JEE Arc

JEE Main 2026 · 21 Jan, Evening shift · Q63

JEE Main 202621 Jan, Evening shiftChemistryMediumChemical Thermodynamics84× since 2002

Consider the following data :

\Delta_fH^\ominus

(methane, g)

=-X

kJ mol

^{-1}

Enthalpy of sublimation of graphite

=Y

kJ mol

^{-1}

Dissociation enthalpy of

\mathrm{H_2}=Z

kJ mol

^{-1}

The bond enthalpy of C

-

H bond is given by :