What is Mechanism of Sn1 reaction …

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Sn1 reaction proceed in two step.first is the formation of carbocation then attack of nucleophile.sn 1 reaction generally occur in polar protic solvent such as water ethanol.rate of sn1 dpends on leaving group.rate of sn reaction directly proportinal to good leaving group.good leaving means weak conjugate base .for sn1 reaction weak nucleophile is required.rate of sn1 directly proportional to stability of carbocation.sn1 is not possible foe bridged compound because carbocation formed as intermediate .carbocation is planar which is not achieveable upto 10 carbon atom in bridged compound.three membered ring does not give sn1 reaction due to angke strain. Nature of substrate must be tetiary for good sn1 reaction .other factor such as carbocation stabilitybalso determine the rate of sn1. Follows first order kinetics.rate directly proportional to concentration of alkyl halide.conc of nucleophile does not affect the rate of sn1 .rate of sn1 reaction involve weak nucleophile .nucleophilicty order can be determined charge density or polarization of electron cloud .