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Q.
Which of the following alkyl halides is hydrolysed by $S_N1$ mechanism?
Haloalkanes and Haloarenes
Solution:
More stable carbocation formed from alkyl halide than reactivity of that alkyl halide will increase to hydrolysis via $SN ^{1}$ mechanism.
$3^{\circ}$ carbocation $>2^{\circ}$ carbocation $>1^{\circ}$ carbocation(order of stability.).