Correct order of nucleophilicity for S_N2 rea | vedclass

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(B) Nucleophilicity is defined as the ability of a species to donate an electron pair to an electrophilic carbon atom. For $S_N2$ reactions,nucleophil

Vedclass · Accepted Answer

$OH^{-} > CH_3COO^{-} > H_2O$

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(B) Nucleophilicity is defined as the ability of a species to donate an electron pair to an electrophilic carbon atom. For $S_N2$ reactions,nucleophilicity generally correlates with basicity when the attacking atoms are the same or in the same period. Comparing the basicity: $OH^{-}$ is a strong base. $CH_3COO^{-}$ is a weaker base due to resonance stabilization of the negative charge. $H_2O$ is a neutral molecule and is the weakest nucleophile among the three. Therefore,the order of nucleophilicity is $OH^{-} > CH_3COO^{-} > H_2O$.

Correct order of nucleophilicity for $S_N2$ reaction

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