1.

CH_(3)-Br+Nu^(-)toCH_(3)-Nu+Br^(-) ltBrgt The decreasing order of the rate of the above reaction with nucleophiles (Nu^(-)) A to D is [Nu^(-)=(A)" "PhO^(-),(B)" "AcO^(-), (C)" "HO^(-),(D)" "CH_(3)O^(-)]

Answer»

DgtCgtAgtB
DgtCgtBgtA
AgtBgtCgtD
BgtDgtCgtA

Solution :PHENOXIDE ion is less resonance STABILIZED than `AcO^(-)` ion, therefore, nucleophilicity DECREASES in the order:
`CH_(3)O^(-)(D) gt HO^(-)(C) gt PhO^(-)(A)AcO^(-)(B)` thus, option (a) is correct.


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