A set of three nucleophilic displacement reactions is shown below: Which reaction (A, B, or C) proceeds the fastest? Which reaction (A, B, or C) proceeds the slowest?

Sn1 reaction or unimolecular nucleophilic substitution reactions proceed in the order 3°>2°>1°.

It means the nucleophile has more tendency ro attack 3° carbon or tertiary carbon than 2° or 1°.

Hence the fastest reaction will be B as it has tertiary carbon.

And the slowest reaction will be A as it has primary carbon.

You can refer to attachment for reaction products. ...

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