1 Mol of benzene-1,2-dicarboxylic acid reacts with 1 mol of thionyl chloride. Which product is formed?(Hint: 2 Mols of HCl and 1 mol of SO₂ are released)

Question

Quizplus · Accepted Answer

The reaction between benzene-1,2-dicarboxylic acid and thionyl chloride results in the formation of the acid chloride derivative of the carboxylic acid. This is shown in option II, where the -OH groups on the benzene ring have been replaced by -Cl groups. The reaction also produces 2 mols of HCl and 1 mol of SO2, as indicated. Option I depicts the starting material, option III and IV are not possible products in this reaction.

1 Mol of Benzene-1,2-Dicarboxylic Acid Reacts with 1 Mol of Thionyl