Mechanism SN1 reaction

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recombination of carbocation nucleophile





nucleophilic attack: carbocation reacts nucleophile. if nucleophile neutral molecule (i.e. solvent) third step required complete reaction. when solvent water, intermediate oxonium ion. reaction step fast.





deprotonation: removal of proton on protonated nucleophile water acting base forming alcohol , hydronium ion. reaction step fast.








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