QJEEM23Ch9db0: JEE Main 2023 Chemistry - Class 12 JEEM23Ch9db0 Solution: For the reaction The correct statement is

Question

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For the reaction

JEE Main 2023 (Online) 6th April Morning Shift Chemistry - Haloalkanes and Haloarenes Question 37 English

The correct statement is

A The solvent used in the reaction solvates the ions formed in rate determining step.
B Br− can act as competing nucleophile.
C The reaction can occur in acetic acid also.
D The transition state formed in the above reaction is less polar than the localised anion.

Accepted Answer

R - {CH}_{2} - Br + I^{-} \overset{Acetone}{⟶} R - {CH}_{2} - I + {Br}^{-}

\mathrm{NaBr}

is not soluble in acetone and hence reaction shifts in forward reaction and reaction is called Finkelstein reaction which proceeds through

\mathrm{S}_{\mathrm{N}} 2

mechanism

For

S_N 2

reactions, transition state formed is less polar than the localised anion.

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