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Propene is an alkene, whereas propane is an alkane. Thus, propene 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 decolourises. The bromine does not decolourise 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 colourless, the test tube contained propene.
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15y ago

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Related Questions

What is the propene formula?

The formula for propene is c3h6 the formula for propyne is c3h4.


What polymer is formed from alkene methylpropene?

Propane does not polymerize. Perhaps you meant propene, in which case the answer is "polyethylene, unless you're very clever." It's possible to make polypropylene from propene, but special catalysts must be used.


What is the chemical name for Polypropylene?

The chemical name for Polypropylene is poly(propene).


What is poly-propylene?

Polypropylene is a versatile polymer. It is used both as a plastic and as a fiber. Polypropylene is also known as polypropene. Polypropene is a polymer made up of monomers of propene (an alkene). In the presence of high pressure, high heat and the use of a catalyst, these monomers undergo an addition reaction whereby the monomers are joined together into a long chain known as a polymer. Nomenclature can be derived from "poly" meaning 'many' and "propene" the alkene with three carbon particles.


What bond type does polypropylene have?

Covalent bonding. Polypropylene is a polymer its structure is shown as -[-CH(CH3)-CH2-]- n It monmer is propene ( CH2=CH-CH3 ) One bond of the double bond breaks open and combines with another 'broken' propene double bond to becomes a larger chain . THe whole is covalently bonded throughout.


What two elements combined together in propene?

Propene formula CH3-CH=CH2 in which 2 elements Carbon and Hydrogen are combined, sharing 9 covalent electron bonds


What happens when bromine water is shook up with propene?

When bromine water is shaken up with propene, the bromine water will decolorize due to the addition reaction between bromine and propene. This reaction results in the formation of a colorless 1,2-dibromoethane product.


How man carbons does propene have?

Propene has 3 carbon atoms.


What is the observation between bromine and propene?

Bromine water is a dilute solution of bromine that is normally orange-brown in colour, but becomes colourless when shaken with an alkene. Alkenes can decolourise bromine water, while alkanes cannot.


The formula for propane and propene?

Propane is C3H8.Propene is C3H6.


What monomer is most likely to form an addition polymer?

A monomer with a carbon-carbon double bond (alkene) is most likely to form an addition polymer. The double bond can be broken to allow the monomers to add together without the formation of any byproducts.


What is the major product from the treatment of propene with HCL?

The major product from the treatment of propene with HCl is 2-chloropropane. The HCl adds across the double bond of propene to form a secondary alkyl halide.