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It's because, bromine water, being a good oxidising agent oxidises SO2 to H2SO4.

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โˆ™ 2013-12-03 19:45:34
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Q: Why does bromine water decolourise with SO2?
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Related questions

What alkene decolourises bromine water?

All alkenes decolourise bromine water.

Why benzene does not decolourise bromine 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.

Why does alkyne decolourise bromine water?

The alkyne reacts with bromine removing it from the aqueous solution.

How much ethene is needed to decolourise bromine water?


Do Alkene decolourise bromine water?

Yes they do that. They are reacting together.

Would ethane decolorise bromine water?

Actually no...ethane ( Alkane class in general ) decolourise bromine water due to the absence of the double bond ( C=C ) ethene (alkenes in general ) will decolourise the bromine water..

Chemical reaction between phenol and bromine water?

it cant decolourise

What simple chemical test will distinguish an alkene from an alkane?

Test both in bromine water. The unsaturated alkene will decolourise the bromine water.

Will saturated oils decolourise bromine?

No, unsaturated oils and fats (sunflower oil, olive oil) decolourise when reacted with bromine

Does cycloalkene decolourise bromine water?

Yes, just like the open chain alkenes.

When benzene reacts with bromine water will it decolourise bromine water or not?

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.

What you would see when orange bromine water is shaken with 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.

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