Which of the following functional groups is NOT found on the protonated G-acid?A)     AlcoholB)     BenzeneC)     SulfonateD)     Sulfite

To answer this question, we first need to understand what a G-acid is. G-acid, also known as Gamma acid, is a naphthol sulfonic acid used in the production of dyes.

The functional groups present in G-acid are:

1. Alcohol: This is present as a hydroxyl (-OH) group attached to the benzene ring.
2. Benzene: The basic structure of G-acid includes a benzene ring.
3. Sulfonate: This is present as a sulfonic acid (-SO3H) group attached to the benzene ring.

However, G-acid does not contain:

4. Sulfite: This is a different functional group (-SO3^2-) and is not present in G-acid.

So, the answer is D) Sulfite. This functional group is not found on the protonated G-acid.