Question

The enthalpy of atomization of CH₄ is 1665 kJ mol^-1 . What is the bond enthalpy of C-H?

Answer 1

∆_aHΘ of CH₄ = 1665 kJ mol⁻¹

Number of covalent bonds (C - H) In CH₄ = 4

\(\therefore\) Bond enthalpy of C − H bond = \(\frac{1665\,kJ\,mol^{-1}}{4}\)

= 416.25 kJ