Distinguish between ethane, ethene, and ethyne gas with lab test ?
(1). Alkanes, Alkenes and Alkyne
SNO. | Test | Alkane CH3 – CH3 | Alkane CH2 = CH2 | Alkyne CH ≡CH |
a) | Bromine Water Test |
Reddish Brown Colour retained |
Reddish Brown Colour Discharged |
Reddish Brown Colour Discharged |
b) | Cold aq. KMnO4 Test |
Purple Colour of KMnO4 retained |
Purple colour of KMnO4 Discharged |
Purple colour of KMnO4 Discharged. |