Question

What is the unit of bond enthalpy?

Answer 1

Bond enthalpy

• “It is defined as the amount of energy required to break one mole of bonds of a particular type between two atoms in a gaseous state.”
• For example, the $\mathrm{H}–\mathrm{H}$ bond enthalpy in a hydrogen molecule is ${\text{435.8 kJ mol}}^{-1}$.

Unit of bond enthalpy

• The unit of bond enthalpy is ${\text{kJ mol}}^{-1}$.