Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
KCET2020ChemistryHaloalkanes and Haloarenes

Which of the following halide shows highest reactivity towards S _ N 1 reaction?

Options

  1. AC ₆ H ₅ CH ₂ Cl
  2. BCH ₃- CH ₂ Cl
  3. CCH ₃- CH ₂- CH ₂- CH ₂ I
  4. DC ₆ H ₅ Cl

Correct answer

A. C ₆ H ₅ CH ₂ Cl

Step-by-step solution

The order of reactivity of halides for S_ N 1 reaction is 3^ >2^ >1^ as the stability of carbocation formed in S_ N 1 will be highest for 3^ and lowest for 1^ . Here, C ₆ H ₅ CH ₂ Cl will show highest reactivity for S _ N 1 mechanism as the carbocation left after removel of Cl ⁻ is resonance stablised. So, C ₆ H ₅ CH ₂ Cl will show highest reactivity towards S_ N 1 reaction.

Practice Haloalkanes and Haloarenes on Quantrex Academy →

More from Haloalkanes and Haloarenes

With reference to the two statements Assertion and Reason, choose the correct option. Assertion: The order of reactivity towards S_N 1 reaction is: C₆ H₅- CH₂ Br > (CH₃ )₃- C - Br 2026What is the major product [Z] formed when compound [C] undergoes the following reactions: 2026Identify the compounds A and B from the following reaction sequence: 2026Identify the wrong statement from the following 2026Two statements, Assertion and Reason are given. With reference to them, choose the correct option. Assertion: Hydrolysis of 2-Bromo-2-methylpropane follows S_N1 mechanism which inv 2026Identify X, Y and Z. 2026Which one is an INCORRECT statement with regard to the following reaction? 2026The compound from which chlorobenzene cannot be prepared easily is 2026 Full Haloalkanes and Haloarenes list All KCET PYQs