Snap & Solve (Chemistry)
Chapter 14 Haloalkanes
SN1 reactionÂ
two step reaction, first order reaction, Carbocation intermediate is formed, rate is dependent on stability of Carbocation, rate of reaction also depends on stability of cation and anion, weak nucleophile performs sn1 reaction, rate of reaction is independent of concentration and strength of nucleophile, product formed will be both R- and S- (mirror image)
SN2 reaction
Single step reaction, second order reaction, rate is dependent on concentration and strength of nucleophile, transition state is formed (sp2 hybridised, planar structure), no Carbocation intermediate formation, rate of reaction is inversely proportional to bulkiness of groups attached to C atom, strong nucleophile performs sn2 reactions. Nucleophile attacks substrate directly from backside, Walden inversion occursÂ