Question

Arrange the following in order of increasing bond strength of the carbon oxygen bond:

Answer 1

Answer:

The correct option is: Carbonate ion < Carbon dioxide < Carbon monoxide

Explanation:

Bond energy is defined as the average energy needed to break a chemical covalent bond and signifies the strength of chemical covalent bond.

The bond strength of a covalent bond depends upon the bond length and the bond order.

Carbon monoxide molecule (CO) has two covalent bond and one dative bond. Bond order 2.6

Carbon dioxide (CO₂) has two carbon-oxygen (C-O) double bonds of equal length. Bond order 2.0

Carbonate ion (CO₃²⁻) has three C-O partial double bonds. Bond order 1.5

Also, the bond length is inversely proportional to the bond order and bond strength.

Therefore, order of C-O bond length: Carbon monoxide<Carbon dioxide<Carbonate ion

Order of C-O bond order: Carbonate ion<Carbon dioxide<Carbon monoxide

Order of C-O bond strength or energy: Carbonate ion<Carbon dioxide<Carbon monoxide