Question

Compare S_N¹ and S_N² reaction mechanisms?

Answer 1

	SN1 Mechanism	SN2 Mechanism
1.	It is a unimolecular nucleophilic substitution reaction of first order.	It is  a biomolecular nucleophilic substituion reaction of second order.
2.	It takes place in two steps.	It takes place in one steps.
3.	It leads to recemisation.	It leads to invertion of configuration.
4.	It mostly take place in tertiary alkyl halides.	It mostly take place in primary alkyl halides.
5.	The rate of the reaction depends only on the concentration on of susbstrate and so it is a first order reaction.	The rate of the reaction depends on the concentration of both the substrate as well as the nucleophilic and so it is a second order reaction.
6.