Question

which will react faster in Sn@ displacement, 1-bromopentane and 2-bromopentane, and why?

Answer 1

Hello Friend

Reaction in SN2 depends upon the leaving group but here both are Br.Hence 1 bromopentane will form 1 degree carbocation and 2 bromopentane will form 2 degree carbication.

But in SN2 Reactivity decrease in order

CH3>1 > 2>3

So 2 bromopentane will react faster.

# Hope it helps
# Follow me