Chemistry - GOC Question with Solution | TestHub

The negative charge moves to the ring carbon next to the carboxyl carbon, with both oxygens neutral.

The C=O and C-O⁻ bonds swap places, so both C-O bonds are equivalent in the hybrid.

The carbon of the carboxyl group becomes C⁺ with two O⁻ groups.

There is no second contributor because the charge is already on oxygen.