Question

Match the chemical reactions in list 1 with the appropriate answer in list 2.​

Answer 1

Answer:

(A) When polyhalogenated alkanes are heated with alc. KOH, a polyhalogenated alkene is obtained. This is a dehydrohalogenation reaction.

A carbanion is formed as the reaction intermediate.

(B) Tert− butyl alcohol on dehydration forms 2-methyl-2-butene.

A carbocation is formed as the reaction intermediate.

(C) Dehydrobromination of ethyl bromide (on heating with alcoholic KOH) forms ethylene.

A transition state is present but no intermediate is formed.

(D) Dehydrobromination of tert butyl bromide (on heating with alcoholic KOH) forms 2-methyl-2-butene.

A carbocation is formed as the reaction intermediate.

Answer 2

2= decomposition

4= displacement

1= endothermic