Chemistry, asked by jazz1290, 9 months ago

Mark the correct increasing order of reactivity of the
following compounds with HBr/HCl.
(a) I < II < III (b) II < I < III
(c) II < III < I (d) III < II < I

Answers

Answered by 982451320
1

Answer:

A option is the correct sequence

Answered by brokendreams
0

II < III < I is the correct order of reactivity.

Explanation:

  • The reaction of an alcohol with HCl or HBr is a nucleophilic substitution.
  • The nucleophile Br- attacks the alcohol and removes the hydroxyl group while itself taking the place.
  • We know that nucleophilic substitution takes place through carboncation formation.
  • Among the reactants given, they are benzyl alcohol, paranitrobenzyl alcohol and parachlorobenzyl alcohol.
  • Since both nitro and chloro group are electron withdrawing groups, then they decrease the chances of carboncation formation of the benzyl alcohol.
  • But nitro group being stronger, decrease less than that of chlorine.
  • So the reactivity order is II < III < I.

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