Test for Unsaturation

Question 1

Halogens can be used to test if a molecule is

Answer 1

unsaturated (i.e. contains a double bond)

Question 2

Br2(aq) is an ………. solution, called bromine water and this is the halogen most commonly used

Answer 2

orange or yellow

Question 3

The unknown compound is …………..with the bromine water

If the compound is unsaturated, an addition reaction will take place and the coloured solution will…………..

Answer 3

shaken

decolourise go clear