What is the correct order of nucleophilicity | vedclass

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(B) The $S_N2$ reaction is a concerted mechanism where the rate depends on the strength of the nucleophile.Nucleophilicity generally increases with th

Vedclass · Accepted Answer

$OH^- > CH_3COO^- > H_2O$

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(B) The $S_N2$ reaction is a concerted mechanism where the rate depends on the strength of the nucleophile.Nucleophilicity generally increases with the negative charge and decreases with resonance stabilization.$1$. $OH^-$ is a strong nucleophile because it carries a full negative charge.$2$. $CH_3COO^-$ is a weaker nucleophile than $OH^-$ because the negative charge is delocalized over two oxygen atoms due to resonance.$3$. $H_2O$ is a neutral molecule and acts as the weakest nucleophile among the given species.Therefore,the correct order of nucleophilicity is $OH^- > CH_3COO^- > H_2O$.

What is the correct order of nucleophilicity for an $S_N2$ reaction?

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