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The red color of bromine water fades on addition of sodium bisulfate because the bisulfate ion (HSO3-) reacts with the bromine (Br2) to form colorless bromide ions and sulfur dioxide gas, causing the original red color to disappear. This reaction essentially reduces the bromine to bromide ions, resulting in the loss of the characteristic red color.

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

Bromine water changes from orange to colorless when mixed with unsaturated fats due to the addition reaction that occurs between bromine and the double bonds in the unsaturated fats.


What color is bromine water?

Bromine water is a reddish-brown color.


What test is used to show that ethene is unsaturated?

Bromine water test is used to show that ethene is unsaturated. In the presence of ethene, the red-brown color of bromine water disappears due to addition reaction with ethene, indicating its unsaturation.


What is the reagent to distinguish alkene and alkyne?

Bromine in water or bromine water can be used to distinguish between an alkene and an alkyne. Alkenes will decolorize bromine water by undergoing addition reactions, while alkynes will not react under normal conditions and will not decolorize bromine water.


Does heptene decolourize bromine water in the dark?

Yes, heptene will decolorize bromine water in the dark due to its ability to undergo addition reactions with bromine. This reaction forms a colorless compound, resulting in the decolorization of the bromine water.


What happens when acetylene is bubbled through bromine water?

When acetylene is bubbled through bromine water, the unsaturated acetylene undergoes a reaction with bromine (a halogen) to form a dihalogenated compound, bromoethylene. This reaction is an addition reaction where two bromine atoms add across the carbon-carbon triple bond in acetylene to form the product. The bromine water, which is originally orange-brown in color, will decolorize as the reaction proceeds.


How can bromine water test the difference between alkanes and alkenes?

Bromine water can differentiate between alkanes and alkenes because alkenes can decolourize bromine water due to their ability to undergo addition reactions. Alkanes, being saturated hydrocarbons, do not react with bromine water because they lack double bonds to facilitate the addition reaction.


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

Bromine water will change from orange to colourless when it is mixed with saturated fat.


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.


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 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.


What happens if ethene is shaken with bromine water?

If ethene is shaken with bromine water, the orange color of bromine water will be decolorized due to the addition reaction of bromine to ethene. This reaction results in the formation of a colorless compound called 1,2-dibromoethane.