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Kerosene is less dense than water.
Pouring water on a kerosene fire may cause splashes of hot/burning kerosene and water to splatter, due to the fact that kerosene is not miscible in water.
Use bromine water (Br2) or acidified permanganate (H+/MnO4-) With permanganate: add the permanganate to the alkane and no reaction will occur, add the permanganate to the alkene and you will form a diol the solution will also turn from purple to colourless. With bromine water: add the bromine water to the alkane (plus you need sunlight) and you get a substitution reaction, this is a slow reaction. Add the bromine water to the alkene and you get an immediate addition reaction (this one does not need sunlight). When bromine water reacts with an alkene it is decolourised, the reddish brown bromine water turns from brown to colourless. This is because alkenes are unsaturated and contain a carbon to carbon double bond. If you did the bromine water test in a dark place say a cupboard then the alkene would decolourise but the alkane wouldn't because it needs UV/sunlight in order to react. in practice the cupboard is not necessary as the speed of decolourisation is so much faster with the alkene.
No. Kerosene is an organic compound. and water is a non-organic compound. (kerosene : non-polar Water : polar). As water is a polar solvent kerosene is not soluble in it. but kerosene is soluble in ethyl alcohol which is a non-polar solvent.
The alkyne reacts with bromine removing it from the aqueous solution.
it cant decolourise
No!! Benzene wont de colourise bromine water although it is an unsaturated compound ,as it is an aromatic compound and it does not undergo addition reaction.
Saturated hydrocarbon does not decolourise bromine water while unsaturated hydrocarbon decolourize it.
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.
water
Benzene will not decolourise bromine water as it does not undergo addition reaction. It is highly saturated due to presence electron cloud above and below it.
The bromine water turns from orange to colourless, as it is breaking the double bonds. When the oil becomes saturated, any more bromine water that is added will not turn colourless.
Liquid bromine is the Real Bromine, while Bromine water is a mixture of Bromine and Water
kerosene floats on water because kerosene is less denser than water
Liquid bromine is the Real Bromine, while Bromine water is a mixture of Bromine and Water
When water and kerosene are mixed kerosene will float on top.