no it is not. it is a sulfonyl chloride

it's a slfonation and made benzene sulfonyl chloride

Think about the byproduct that forms in the reaction between the aminothiazole and the sulfonyl chloride. And remember that potassium carbonate is a base. Good luck with the chem 390 lab report

The moisture in the atmosphere will react with the sulfonyl chloride like so:

RSO2Cl + H2O ---> RSO2OH + HCl

(where R is the rest of your acetaminobenzene bit)

In an aromatic sulfonation reaction, a sulfonyl group (-SO3H) replaces a hydrogen on an aromatic ring (such as benzene). This is done by refluxing (heating to boiling with a reflux condenser) the aromatic with fuming sulfuric acid (concentrated sulfuric acid with gaseous SO3 present).

This reaction is reversible, so mixing the aryl sulfonic acid with a dilute acid will reform the sulfuric acid and remove the sulfonyl group from the arene.