What kind of environment can make hydrogen peroxide decompose instantly?

Affects hydrogen peroxide.

The main factors of decomposition are: temperature, pH value.

impurities and light, etc.

1. Temperature: Hydrogen peroxide is relatively stable at lower temperature and concentration, but when heated to higher than 153, it will decompose violently.

2. pH value: the pH of the medium.

It has a great impact on the stability of hydrogen peroxide. Under acidic conditions, hydrogen peroxide is relatively stable, but under alkaline conditions, it is very unstable and can decompose quickly.

3. Impurities: Impurities are an important factor affecting the decomposition of hydrogen peroxide. Many metal impurities such as Fe2+, Mn2+, Cu2+, Cr3+, etc., can accelerate their decomposition.

Therefore, because industrial products contain more metal ion impurities, stabilizers must be added to inhibit their catalytic decomposition. In addition、Dust、Yeast。

and other impurities can also cause the decomposition of hydrogen peroxide.

4. Light: Light can decompose hydrogen peroxide, especially the light energy with a wavelength of 320-380nm can accelerate its decomposition.

5. Hydrogen peroxide is also called hydrogen peroxide.

Chemical formula: H2O2), pure hydrogen peroxide is a light blue viscous liquid, miscible with water in any proportion, is a strong oxidizing agent, aqueous solution is commonly known as hydrogen peroxide, is a colorless transparent liquid. Its aqueous solution is suitable for medical wound disinfection, environmental disinfection and food disinfection.

6. Under normal circumstances, it will slowly decompose into water and oxygen, but the decomposition rate is extremely slow, and the way to speed up its reaction speed is to add a catalyst - manganese dioxide.

etc. or irradiation with short-wave rays.

Hydrogen peroxide is a common name for hydrogen peroxide with the chemical formula HO.

Hydrogen peroxide is a mixture of flushing and blocking matter, and the appearance of the car is a colorless and transparent liquid, which is a strong oxidant, suitable for wound disinfection and environmental and food disinfection. The chemical equation for hydrogen peroxide splitting is:

Experimental principle of hydrogen peroxide to produce oxygen rock: hydrogen peroxide (H2O2) - water (H2O) + oxygen (O2).

Specific steps for hydrogen peroxide to produce oxygen:

Connecting devices. Check the airtightness of the device.

Then fill the Erlenmeyer flask with manganese dioxide.

Pour in hydrogen peroxide solution.

Collect oxygen. Precautions for hydrogen peroxide to produce oxygen:

The separating funnel can be replaced with a long-neck funnel, but its lower end should extend below the liquid surface to prevent the generated gas from escaping from the long-necked funnel;

The catheter only needs to be slightly inserted into the tube plug.

Air tightness check: close with a water stop clip, open the piston of the separating funnel, add water to the funnel, and the water level does not continue to fall, indicating that the air tightness is good.

When filling medicines, fill solids first and then liquids.

The advantages of this device: the start and end of the reaction can be controlled, and the liquid air jujube combustor can be added at any time.

Summary of hydrogen peroxide to oxygen:

If the solid (or solid + solid) is heated to generate gas, the potassium permanganate oxygen production device is selected;

If the gas is produced at room temperature of solid + liquid, hydrogen peroxide is used to produce oxygen.

Catalyst: A substance that can change the reaction rate of other substances in a chemical reaction, but its chemical properties and mass have not changed before and after the reaction.

The long-necked funnel is filled with hydrogen peroxide, and the lower end of the long-necked funnel should be sealed, that is, submerged in the water of the Erlenmeyer flask, and the Erlenmeyer flask is filled with manganese dioxide and water.

When charging, it is first filled with solid and then liquid.

When the air bubbles in the gas collector cylinder overflow, it means that the oxygen in the gas collector cylinder has been collected.

Very faintly acidic. Barely I can say it. In fact, his pH is about the same as 7. The volume does not change much, because one hydrogen perper splits down to produce one water. Almost. The above data can be said to remain unchanged.

Hydrogen peroxide can be catalytically decomposed, which is an exothermic reaction that produces gases at the same time.

2H2O2 (liquid) — 2H2O (liquid) + O2 (gas) 2H2O2 (gas) — 2H2O (gas) + O2 (gas) The main factors affecting hydrogen peroxide decomposition are: temperature, pH value and catalytic impurities.

1 Temperature: H2O2 is still more stable at lower temperature and higher purity. When pure H2O2 is heated to a temperature of 153 or higher, it will decompose violently**. The decomposition proceeds smoothly at lower temperatures

2h2o2—→2h2o + o2↑ +

2 pH: The acidity and alkalinity of the medium have a great influence on the stability of H2O2. Under acidic conditions, H2O2 is stable in nature and oxidizes slowly. In alkaline media, H2O2 is very unstable and decomposes quickly. The reaction rate of H2O2 as an oxidizing agent is usually fast in alkaline solutions.

Therefore, heating the alkaline solution can completely destroy the excess H2O2.

3. Impurities: Impurities are an important factor affecting the decomposition of H2O2. Many metal ions such as Fe2+, Mn2+, Cu2+, Cr3+, etc., can accelerate the decomposition of H2O2. Because industrial-grade H2O2 contains more metal ion impurities, a large amount of stabilizer must be added to inhibit the catalytic effect of impurities, and the principle is reduction and complexation.

4. Light: Light with a wavelength of 3200-3800A can also speed up the decomposition of H2O2.

In order to prevent the decomposition of H2O2, it is necessary to propose measures for the four major factors of heat, light, pH, and metal ions.