Two unlabelled organic samples are believed to contain cyclopropane and propane.By means of one chemical test,show how the two compounds can be distinguished?

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  1. set both samples (at atmospheric pressure) in a dry ice box, once the both gases are liquified, remove them. The first to boil will be propane (bp -45F), followed by cyclopropane (bp -25F)

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  2. Add Br2 IN THE DARK. Cyclopropane will add Br2 in the dark to form the bromopropane. Propane will do this but ONLY with UV (or sunlight) and not in the dark.

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  3. See what great help you get on Jiskha. You get a means of identification PHYSICALLY and well as CHEMICALLY.

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