The chemical compound -dichlorodiphenyltrichloroethane (DDT) is prepared industrially by the condensation of chlorobenzene with which substance in the presence of concentrated ?
Answer and explanation
Correct answer: C. Chloral
- Step 1: DDT is synthesized via an electrophilic aromatic substitution condensation reaction.
- Step 2: Two moles of chlorobenzene condense with one mole of chloral (trichloroacetaldehyde, ) in the presence of concentrated sulfuric acid as a dehydrating agent.
- Step 3: The chemical equation is: .
Answer
Chloral ().
Why not the others: Chloroform does not possess a carbonyl group to undergo condensation; Carbon tetrachloride does not condense with chlorobenzene under acidic conditions; Trichloroacetic acid produces ketones or esters rather than a diaryl trichloroethane.
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