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Q: Why red colour of bromine water will fede on addition of sodiumbisulfate?
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What color is bromine water?

Red colour


What colour is bromine dissolved in water?

Blackish-white


What test is used to show that ethene is unsaturated?

by adding bromine water to the compound. if it is unsaturated, the red colour of the bromine water will fade quickly. if it is saturated, then it will not fade.


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 color is bromine water and NaCl mixed together?

Bromine water and NaCl mixed together appears colourless. The only condition which there is a colour is when the bromine water is old (bromine water is basically rum), but under normal conditions, the mixture ought to be colourless.


What color does bromine water change when you mix it with unsaturated fat?

There is no colour change


What colour does bromine water change when you mix it with saturated fat?

It goes red


What is the color of gaseous bromine?

Kind of Red/Brown, or rust color, but vibrant.


Why does polyethene not react in the same way with bromine water as ethene?

As polyehtene is unsaturated(single bond) it does not react with bromine and there is no colour change.But bromine reacts with ethene and it becomes colourless.


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.


Reaction to distinguish primary alkylamine and primary arylamine?

To distinguish between primary alkylamine and primary arylamine, reaction with aqueous bromine (Bromine water, Br2) can be carry out. There will be a formation of 2,4,6-tribromophenylamine which seen as white precipitate. Also, colour of bromine colour will be decolourized.


What happens when bromine water is added to oil?

it changes colour form orangy-brown to colourless