3.8 Describe the addition reaction of alkenes with bromine,including the decolourising of bromine water as a test for alkenes

1.       Write the word equation showing the reaction between ethene and bromine water

2.       Draw the displayed formula of the reaction above

3.       Explain the observations

4.       Why does this reaction not need a catalyst?

5.       What type of reaction is this called?

6.       Explain why this reaction is useful