What is the difference between Sn1 and Sn2 reactions?

Both Sn1 and Sn2 reactions are nucleophilic substitution reactions. Sn1 reactions proceed via 2 steps. An example of this is the substitution of a halogen group such as bromine with an OH- group forming an alcohol. In this case the bromine group would leave the molecule first then the OH- group would attack. This is like waiting for someone to get up of a chair before sitting down on that chair. An Sn2 reaction proceeds via 1 step. The OH- group attacks the molecule whilst the halogen is still attached and causes the halogen to he pushed off the molecule. Again this is like pushing someone off a chair whlist you sit down.

JS
Answered by Joseph S. Chemistry tutor

6468 Views

See similar Chemistry A Level tutors

Related Chemistry A Level answers

All answers ▸

How do acid buffer solutions work?


Calculate the pH of a 0.0131 mol dm^-3 solution of calcium hydroxide at 10 degrees centigrade.


The reversible reaction of sulfur dioxide and oxygen to form sulfur trioxide is shown below. 2SO2(g) + O2(g) 2SO3(g) An equilibrium mixture contains 2.4mol SO2, 1.2mol O2 and 0.4mol SO3. The total pressure is 250atm. What is the p(SO3)?


Describe why phenol reacts more readily with bromine than benzene does.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning