Question

How are propane, propene, and propyne similar? How are they different?

Answer 1

Explanation:

Main Difference – Propane vs Propene

• Hydrocarbons are compounds made out of only C and H atoms. Propane and propane are hydrocarbon compounds. These compounds are obtained from petroleum oil wells at petroleum oil processing plants. Both these compounds can be used as LP gas since they can be liquefied easily.
• Propane and propane are gases at room temperature due to the low boiling point. These are flammable compounds. The main difference between propane and propene is that propane is an alkane having only single bonds whereas propane is an alkene having a double bond apart from single bonds.
• Propene is an alkene, whereas propane is an alkane. Thus, propane is an unsaturated molecule, having a carbon-carbon double bond. If you add bromine water, an aqueous solution of bromine, to the test tubes, you can tell which is propene, the alkene. The bromine reacts with and saturates the double bonds in alkenes, and so decolorizes. The bromine does not decolorize when added to an alkane as it does not react. So, in conclusion:
• Add bromine water (brown) to the test tubes
• If the bromine water stays brown, the test tube contains propane
• If the bromine water goes colorless, the test tube contained propane.