Substitution

This video outlines the mechanisms of Sn1 and Sn2 nucleophilic substitution reactions of haloalkanes and explains why primary haloalkanes do not undergo Sn1 using a reaction profile diagram

One in a series looking at the chemistry of haloalkanes (alkyl halides). This video looks at the reaction of bromoethane with an ethanolic solution of potassium hydroxide. The contrast is drawn between nucleophilic substitution and elimination mechanisms. In substitution the hydroxide ions behave as nucleophiles, whereas in elimination, the hydroxide ions act as a Bronsted base bringing about deprotonation.