Key Alkene Reactions

Question 1

Br2

Answer 1

C2H4 +Br2——C2H4Br2

Observation changes form orange to color less

Question 2

H20

Answer 2

C2H4 (C double C) + H20 (H-OH) -> C2H5OH
- makes an alcohol ( Ethanol)
- water must be steam
- high temperature 300
- high pressure
- acid catalyst

Question 3

Key rules with all the reactions

Answer 3

Brake then add

Question 4

H2

Answer 4

C2H4 + H2—-C2+H6

• 150*c and nickel catalyst
  Ethene turns into ethane
• An alkane has therefore been produced