In which solvent—ethanol or diethyl ether—would the equilibrium for the following SN2 reaction lie farther to the right?
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The provide reaction is as follows:
The favorable condition for the reaction: High concentration of a good (negatively charge) nucleophile in an aprotic polar solvent.
The solvent diethyl ether is aprotic solvent and ethanol is polar protic solvent. From the above explanation, diethyl ethercould be mistakenly assumed to be a suitable solvent in this reaction. But, it is not.
Here, the products are charged ions . A polar solvent will stabilize the charge ions. Hence, the polar solvent is suitable for this reaction.
Therefore, equilibrium for the given reaction lies farther to the right in the presence of ethanol solvent.