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Question: CH3Br + Nu–\(\longrightarrow\)CH3 – Nu + Br– The decreasing order of the rate of the above reaction...

CH3Br + Nu–⟶\longrightarrowCH3 – Nu + Br–

The decreasing order of the rate of the above reaction with nucleophiles (NuÆ) A to Dis :

}{HO^{-},(D) \rightarrow CH_{3}O^{-}\rbrack}$$
A

D > C > B > A

B

A > B > C > D

C

B > D > C > A

D

D > C > A > B

Answer

D > C > A > B

Explanation

Solution

Since this reaction will follow SN2 pathway so stronger the base better its nucleophilicity.

The correct order of nucleophiles would be :

CH3O¯ > OH¯ > PhO¯ > AcO¯\text{C}\text{H}_{3}\text{O}\text{¯}\text{ > OH}\text{¯}\text{ > PhO}\text{¯}\text{ > AcO}\text{¯}