A substance that can discolor the acidic solution of potassium permanganate

The substances that can discolor the potassium permanganate solution and the related chemical reaction principles are as follows:

reacts with unsaturated hydrocarbons such as olefins, alkynes, and diolefins to fade the potassium permanganate solution; It reacts with benzene congeners (toluene, ethylbenzene, xylene, etc.) to discolor the acidic potassium permanganate solution.

Redox reaction occurs with phenol to discolor the potassium permanganate solution and redox reaction with aldehyde groups and other aldehyde organic matter, and the potassium permanganate solution fades and reacts with reducing inorganic reducing agents (such as H2S, SO2, FeSo4, Ki, HCl, etc.) to fade the potassium permanganate solution.

Hello. A substance that can discolor an acidic potassium permanganate solution.

All reducing substances, homologues of alkene, alkyne, aldehydes, benzene and organic compounds containing the above functional groups. a) Organic. 1. Unsaturated hydrocarbons (alkenes, alkynes, diolefins, styrene, etc.);

2 Homologues of benzene;

3. Derivatives of unsaturated hydrocarbons (enols, enal, oleic acids, halogenated hydrocarbons, oleic acid, oleates, oleates, etc.);

4. Organic matter containing aldehyde groups (aldehyde, formic acid, formate, a certain ester of formate, etc.);

5. Petroleum products (pyrolysis gas, pyrolysis gas, pyrogas, etc.);

6 Coal products (coal tar);

7 Natural rubber (polyisoprene).

b) Inorganic. 1 2-valent sulfur compounds (hydrogen sulfide, hydrosulfuric acid, sulfide);

2 4 Sulfur compounds (sulfur dioxide, sulphurous acid and sulphites);

3 Hydrogen peroxide (hydrogen peroxide, where oxygen is 1 valence).

kmno4:

Reductive ions (e.g., Fe2, SO3 (2-), Hso3, I, S2, Hs, etc.), substances containing unsaturated bonds (e.g., C2H4, C2H2, CH3CHO), organic substances with H atoms on carbon atoms connected to the benzene ring.

Certain reducible substances.

The ones that can fade the acidic potassium permanganate are:

1. Carbon-carbon double bond: Carbon-carbon double bond refers to the hybridization of one 2S sublayer and two 2P sublayers of carbon into three sp2 hybrid orbitals. These three sp2 hybrid orbitals are distributed in the same plane. The bond energy is greater than that of a single bond.

2. Carbon-carbon triple bond: Triple bond is a heavy bond (covalent bond) composed of three pairs of shared electrons between two atoms in a compound molecule, called a triple bond.

3. Hydroxyl group: The hydroxyl group has a chemical formula of -OH, which is a common polar group. Hydroxyl groups are mainly divided into alcohol hydroxyl groups, phenolic hydroxyl groups, etc.

4. Aldehyde group: a covalent bond in the carbonyl group is connected to the hydrogen atom and forms a monovalent atomic group, which is called an aldehyde group, the structure of the aldehyde group is -cho, and the aldehyde group is a hydrophilic group, so the organic matter with the aldehyde group (such as acetaldehyde, etc.) has a certain water solubility.

5. Amino group: Amino group is the basic base in organic chemistry, and all organic matter containing amino group has certain alkaline characteristics, which is composed of one nitrogen atom and two hydrogen atoms.

Potassium permanganate is used as a preservative, disinfectant, deodorant and antidote in medicine; In water purification and wastewater treatment, it is used as a water treatment agent to oxidize hydrogen sulfide, phenol, iron, manganese and organic, inorganic and other pollutants to control odor and decolorization; In gas purification, trace amounts of sulfur, arsenic, phosphorus, silane, borane and sulfide can be removed.

In mining metallurgy, oxidants for the separation of molybdenum from copper, the removal of impurities from zinc and cadmium, and the flotation of compounds; It is also used as a bleaching agent for special fabrics, waxes, greases and resins, an adsorbent for gas masks, and a colorant for wood and copper.

1. Unsaturated hydrocarbons such as olefins, alkynes, and diolefins and derivatives of unsaturated hydrocarbons.

A reaction occurs that fades the potassium permanganate solution;

Reaction with acetylene:

2. Some alcohol hydroxyl groups, phenolic hydroxyl groups (such as phenol).

A redox reaction occurs, which fades the potassium permanganate solution.

Reaction with ethanol:

3. Aldehydes and other organic compounds with aldehyde groups (such as aldehydes, formic acid, formate, formate, glucose, maltose, etc.).

A redox reaction occurs, which fades the potassium permanganate solution.

Formaldehyde reacts with potassium permanganate: 5HCO+4kmNO4+6H2SO4==5CO2 +2K2SO4+4MnSO4+11H2O

4. Inorganic reducing agent with reducing properties.

such as H2S, SO2, FeSO4, Ki, HCl, etc.) to fade the potassium permanganate solution.

Reaction with hydrogen sulfide:

5. Phenol. A chemical reaction took place.

3c6h5oh+4kmno4=3c6h4o2+4mno2+4koh+h2o