Question

формулы веществ обесцвечивающих бромную воду

Answer 1

C6H5OH+3Br2=C6H2Br3OH(осадок)+3HBr

С6H5NH2+Br2=C6H2Br3Nh2(осадок триброманилин,белого цвета)+3HBr(качественная)

Answer 2

Formulas of Substances that Discolor Bromine Water

Bromine water is a solution of bromine (Br2) dissolved in water. It is commonly used as a reagent in chemical reactions to test for the presence of unsaturated compounds. When bromine water comes into contact with certain substances, it undergoes a chemical reaction that leads to a change in color.

Here are some formulas of substances that can discolor bromine water:

1. Alkenes: Alkenes are unsaturated hydrocarbons that contain at least one carbon-carbon double bond. When bromine water reacts with alkenes, the bromine molecule adds across the double bond, resulting in a decolorization of the bromine water. The reaction can be represented by the following general equation:

Alkene + Bromine water → Dibromoalkane

For example, ethene (C2H4) can react with bromine water to form 1,2-dibromoethane (C2H4Br2).

2. Phenols: Phenols are aromatic compounds that contain a hydroxyl group (-OH) attached to a benzene ring. When bromine water reacts with phenols, the bromine molecule adds to the benzene ring, leading to a decolorization of the bromine water. The reaction can be represented by the following general equation:

Phenol + Bromine water → Brominated phenol

For example, phenol (C6H6O) can react with bromine water to form 2,4,6-tribromophenol (C6H3Br3OH).

3. Aldehydes and Ketones: Aldehydes and ketones are carbonyl compounds that contain a carbon-oxygen double bond (C=O). When bromine water reacts with aldehydes or ketones, the bromine molecule adds across the carbon-oxygen double bond, resulting in a decolorization of the bromine water. The reaction can be represented by the following general equation:

Aldehyde/Ketone + Bromine water → Brominated aldehyde/ketone

For example, formaldehyde (CH2O) can react with bromine water to form 2,4,6-tribromo-1,3-dioxane (C3H3Br3O2).

It is important to note that these are just a few examples of substances that can discolor bromine water. There are many other organic compounds that can undergo similar reactions with bromine water, leading to a decolorization of the solution.

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