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During SN^1 reactions, the leaving group...

During `SN^1` reactions, the leaving group leaves the molecule before the incoming group is attached to the molecule.

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The correct Answer is:
1

In `SN^1`, first the ionisation of `RX` takes place, which means the leaving group leaves the molecule before the attack of `Nu^(Ӫ)`.
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-COOH group in electrophilic substitution directs the incoming groups to