Question

Unsaturated hydrocarbons contain multiple bonds between the two C-atoms and show addition reaction. Give the test to distinguish ethane from ethene.

Answer 1

Distinction between ethane and ethen can be done with the help of bromine water test. Whereas ethene discolourises the yellow colour of bromine water. Ethane does not .
`underset("Ethene (colourless)")(H-overset(H)overset(|)(C)=overset(H)overset(|)(C)-H)+underset(("Yellow"))(Br_(2))overset((Aq))tounderset("1,2-Dibromoethane (colourless)")(H-underset(Br)underset(|)overset(H)overset(|)(C)-underset(Br)underset(|)overset(H)overset(|)(C)-Br)`