U3S6 elimination reactions

Question 1

Making alkene from halogenoalkane conditions

Answer 1

• elimination reaction
• warm
• hydroxide ions dissolved in ethanol

Question 2

Making alkene from halogenoalkane steps

Answer 2

1. OH- acts as a base and takes a proton from carbon on left
2. Left carbon now has a spare pair of electrons so forms a double bond with middle carbon
3. To form double bond, middle carbon has to let go of Br, which drops off as Br- ion