To Conduct Demonstration: Pour two samples of heptane and two samples of cyclohexene into separate test tubes in a lighted rack. Add one or two drops of 1% bromine in dichloromethane to one sample of ...

They are flammable liquids and have irritating vapours. A student adds a few drops of bromine water to a small volume of hexane in a test tube, then shakes the mixture. She repeats this test using ...