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Expain the SN^2 mechanism...

Expain the `SN^2` mechanism

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When methyl bromide undergoes hydrolysis with aqueous potassium hydroxide, methyl alcohol is formed
`CH_3-Br+KOHtoCH_3-OH+KBr`
This mechanism involves only one step

The nucleophile `OH^-` attack from the rear side of the leaving group. A transitlon stale with partial formation of C-OH bond and partial breaking of C-Br bond takes place simultaneously.
The-rate of the reaction depends both on the concentration of nucleophilc as weil as alkyl halide. Hence, it is a second order reaction. In `SN^2` reaction, complete inversion of configuration takes place.
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