Bond Enthalpy

Question 1

Define bond enthalpy

Answer 1

The energy required to break 1 mole of covalent bonds between 2 atoms in a molecule in the gaseous state

Question 2

C=O bond has higher bond enthalpy than C-O bond

Answer 2

There are more electrons involved in the bond for a double bond compared to a single bond. This results in a stronger bond, which means more energy is required to break it compared to a single bond.