Question

Find which undergoes sn2 reaction fastest 1 iodo butane or chloroform butane

Answer 1

In the SN2 mechanism, the reactivity of halides for the same alkyl group increases in the order. This happens because as the size increases, the halide ion becomes a better leaving group.

R-F << R-Cl < R-Br < R-I

Therefore, CH3I will react faster than CH3Br in SN2 reactions with OH-