What are the best conditions for hydrogen peroxide to produce oxygen

Hydrogen peroxide is in a liquid state, only need to add a catalyst manganese dioxide to react, no need to heat, and can be started and stopped as needed, and the speed of the reaction can be controlled by the droplet acceleration of the hydrogen peroxide solution, and the reaction speed can be judged by the speed of the gas in the flask, and the product is water without pollution.

When hydrogen peroxide is used to produce oxygen, why should the hydrogen peroxide solution in the separating funnel be slowly dropped into the Erlenmeyer flask?

Because the decomposition of hydrogen peroxide will release a large amount of heat, if it is injected into the Erlenmeyer flask quickly, it will cause the temperature to be too high, and the release of a large amount of oxygen will increase the pressure of the system, which will cause the whole system to be in danger of high temperature and pressure.

Manganese dioxide can be used as a catalyst for hydrogen oxide to produce oxygen. h can be used as a catalyst for the decomposition of hydrogen oxide solution instead of manganese dioxide. Please design a protocol to verify that h has a catalytic effect. How should the experimental procedure and experimental procedure be written?

This question is a classic question type in the previous high school entrance examinations, due to the complexity of the process, there are more points that need to be answered, and few students can get a full score. I've told my classmates many times, and I hope it will help you as well.

Because the catalyst has the characteristic of "one change, two unchanged", that is, "change the rate of chemical reaction; Before and after the reaction, its own mass and chemical properties do not change", so to prove that H has a catalytic effect, it is necessary to prove these three properties, so three experiments should be done, and the following operations should be carried out respectively:

Procedure: a

Procedure: A small amount of hydrogen peroxide liquid is taken into a test tube and a wooden strip with sparks is inserted inward.

Experimentation: The strips did not rekindle.

Procedure: Add x g H to the above tube, and then extend inward a wooden strip with Mars.

Experimental Phenomenon: The wooden strip has rekindled.

This experiment shows that h can change the reaction rate of hydrogen peroxide decomposition).

b.Experimental procedure: The solids in the test tube after the above reaction are dissolved, filtered, washed, and dried. (thus obtaining the remaining h after the reaction from the tube) to weigh the resulting solids.

Weighing result: h is still x grams.

This experiment shows that the mass of h does not change before and after the reaction).

c.Procedure: Take a small amount of hydrogen peroxide solution into another test tube, and add the remaining H after the previous experiment to the test tube again. Then a sparkled stick of wood is inserted into the tube.

Experimental Phenomenon: Re-ignition of wooden strips.

This test shows that the chemical properties of h before and after the reaction have not changed, and it can still catalyze the decomposition of hydrogen peroxide).

To sum up, it can be obtained.

Results: h has a catalytic effect on the decomposition of hydrogen peroxide.

Chemistry Experiments and Reflections 18: Hydrogen Peroxide to Oxygen - Yongsheng Chemistry House.

Manganese dioxide is added as a catalyst.

Summary. Hydrogen peroxide solution to produce oxygen and sodium carbonate to produce oxygen are both commonly used methods for producing oxygen from household oxygen generators. The advantages of hydrogen peroxide solution for oxygen production are as follows:

Hydrogen peroxide solution has a high efficiency in producing oxygen and can produce oxygen in a shorter time. The oxygen production equipment for producing oxygen from hydrogen peroxide solution is simple in structure and easy to operate. Hydrogen peroxide solution is a low-cost way to produce oxygen.

The advantages of sodium carbonate to produce oxygen are as follows: The process of producing oxygen from sodium carbonate is simple and easy to operate. Sodium carbonate is less expensive to produce oxygen and can be carried out under household conditions.

Sodium carbonate produces oxygen with high oxygen production efficiency and can produce oxygen quickly. In short, hydrogen peroxide solution for oxygen and sodium carbonate for oxygen have their own advantages, and you can choose according to your needs and preferences when choosing a home oxygen concentrator.

Hydrogen peroxide solution to produce oxygen and sodium carbonate to produce oxygen are both commonly used methods for producing oxygen from household oxygen generators. The advantages of hydrogen peroxide solution to produce oxygen are as follows: hydrogen peroxide solution has a higher efficiency in producing oxygen and can produce oxygen in a shorter time.

The structure of the oxygen production equipment for the production of oxygen from hydrogen peroxide solution is simple and easy to operate. Hydrogen peroxide solution is a low-cost way to produce oxygen. The advantages of sodium carbonate for oxygen production are as follows:

The process of producing oxygen from sodium carbonate is simple and easy to operate. Sodium carbonate production is less expensive to obtain oxygen and can be carried out under household conditions. Sodium carbonate produces oxygen with high oxygen production efficiency and can produce oxygen quickly.

In short, hydrogen peroxide solution to produce oxygen and sodium carbonate to produce oxygen have their own fiber advantages, and you can choose according to your own needs and preferences when choosing a household oxygen concentrator.

Is hydrogen peroxide solution stable?

Is hydrogen peroxide solution corrosive when the concentration is large?

Is sodium percarbonate easy to carry.

Are you the same question or three questions?

Three questions. 1.Hydrogen peroxide solutions are unstable.

Hydrogen peroxide solution is a hydrogen peroxide water stool solution that contains a certain concentration of hydrogen peroxide molecules (H2O2). Hydrogen peroxide solution is easily oxidized to water and oxygen at room temperature, so its stability is poor. 2.

Hydrogen peroxide solution is corrosive when the concentration is large. Hydrogen peroxide solutions are corrosive, especially at high concentrations. Hydrogen peroxide solutions may corrode metals, plastic grip bonds, and other substances.

3.Sodium percarbonate is easy to carry. Sodium carbonate is a rare crystalline with a small molecular weight and low density, making it easy to carry.

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1. The chemical equation of hydrogen peroxide decomposition to oxygen: 2HO (MNO catalyst) = 2HO+O. The chemical formula of hydrogen peroxide is HO, and its aqueous solution is commonly known as hydrogen peroxide, which is a colorless and transparent liquid in appearance, and is a strong oxidizing agent.

2. The molecule of hydrogen peroxide is composed of 2 hydrogen atoms and 2 oxygen atoms, which can separate a small amount of oxygen at room temperature, and can react violently in the case of adding manganese dioxide to decompose a large amount of oxygen.

3. Hydrogen peroxide can be decomposed at room temperature to generate oxygen and water (slow decomposition), and the reaction can be accelerated after heating or adding catalysts, catalysts are: manganese dioxide, copper sulfate, hydrogen iodide, lead dioxide, ferric chloride, iron oxide, and catalase in living organisms.

There are two situations of hydrogen peroxide decomposition: thermal decomposition and catalyst decomposition at room temperature: the former phenomenon: there are bubbles. The latter: a violent reaction with a large number of bubbles being generated.

The chemical reaction of hydrogen peroxide in the process of producing oxygen will produce a certain amount of black reactants.

You can analyze and judge that such a chemical reaction process can still have the phenomenon of heating.

What happens to hydrogen peroxide under catalyst conditions?

It is still oxidizing and in the case!

Precautions: 1. The separating funnel can be replaced by a long-necked funnel, but its lower end should be deep below the liquid level to prevent the generated gas from escaping from the long-necked funnel; Song Dan is boring.

2. The catheter only needs to be slightly extended into the test tube plug;

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

4. When loading drugs, first load solid and then liquid;

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

1. The chemical equation for hydrogen peroxide to produce oxygen is 2H2O2=2H2O+O2.

2. Hydrogen peroxide is a chemically synthesized substance, which has a relatively strong oxidation effect. It is mainly used in surgery for anaerobic wound infection, wound treatment and disinfection, but hydrogen peroxide also has a great risk in the process of clinical use, because of its strong oxidizing properties, it may cause potential damage to tissues.

1. The chemical equation for hydrogen peroxide to produce oxygen is 2H2O2=2H2O+O2.

2. Hydrogen peroxide is a chemically synthesized substance, which has a relatively strong oxidation effect. It is mainly used in the treatment and disinfection of anaerobic wound infections and wounds, but hydrogen peroxide also has a great risk in the process of clinical use, because of its strong oxidizing properties, which may cause potential damage to tissues.