Identify B and D in the following sequence of reactions: CH_2=CH_2 conc. H _2 SO _4 A [ ] H _2 O B; B PBr _3 C D CH_2=CH_2 [K CET 2011]

JEE Main Chemistry question

Identify and in the following sequence of reactions: ; [K CET 2011]

Answer: (B)

Conc. HSO adds across ethylene (electrophilic addition of H–OSOH) to give ethyl hydrogen sulphate, CHOSOH (). Hydrolysis on heating gives ethanol,

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Question ID VK-142239