What other gases can be made from hydrogen peroxide and manganese dioxide?

Principle: Hydrogen peroxide will decompose slowly, and manganese dioxide plays a catalytic role.

Here's how it works and how to do it: Hydrogen peroxide (hydrogen peroxide) produces oxygen.

a.Experimental principle: hydrogen peroxide (H2O2).

Water (H2O).

Oxygen (O2).

b.Notes:

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

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

c).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.

d).When filling medicines, fill solids first and then liquids.

e).Advantages of the device: the start and end of the reaction can be controlled, and liquids can be added at any time.

Summary: 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 do not change before and after the reaction. In addition to manganese dioxide, there are also platinum and activated carbon, which can catalyze the splitting of hydrogen peroxide.

Chemistry 1-11: Take-Dumping of Liquid Drugs.

As follows:

1.Manganese dioxide in hydrogen peroxide.

Catalytic milling Wool Oxygen chemical equation 2H2O2=2mNO4=2H2O+O2 2Carbonic acid heating H2CO3 = heating = H2O + O2 <>

Brief introduction. Manganese dioxide is an inorganic compound with the chemical formula mnO2, which is a black amorphous powder or a black orthorhombic crystal with blind limbs, which is insoluble in water, weak acid, weak alkali and nitric acid.

Cold sulfuric acid, dissolved in concentrated hydrochloric acid when heated, and orange hall produces chlorine gas.

It is used in the preparation of manganese salts, and is also used as an oxidizing agent and rust remover.

In the presence of manganese dioxide, hydrogen peroxide will accelerate its decomposition. The trouser shack starves into water and oxygen. The chemical equation H2O2 = O2 +2H2O, manganese dioxide can be written above the equal sign as a Hu Hui catalyst. Then you can make peace with the erection.

Chemical equation for oxygen production from hydrogen peroxide and manganese dioxide: under manganese dioxide catalytic conditions.

2H2O2 = 2H2O Ten O2

Hydrogen peroxide slowly decomposes to oxygen, and manganese dioxide acts as a catalyst in chemical reactions, and its mass and chemical properties do not change before and after the reaction.

Hydrogen peroxide reacts with manganese dioxide to produce oxygen.

Hydrogen peroxide. It reacts with manganese dioxide to produce oxygen.

Literal expression: hydrogen peroxide, manganese dioxide.

- Water + oxygen.

Method 1 device: gas collection cylinder, catheter, double-hole rubber stopper.

Method 2: Flask, two-hole rubber stopper, catheter, syringe, Note: No alcohol lamp is required

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 instead of manganese dioxide to do hydrogen oxide solution decomposition reaction.

The chemical equation for hydrogen peroxide and manganese dioxane sodium to produce oxygen is: 2HO (MNO catalyst)=2HO+O. Hydrogen peroxide can undergo a decomposition reaction at room temperature to produce oxygen and water (slow decomposition), and the reaction can be accelerated after heating or adding a catalyst, the catalyst has:

Manganese dioxide, copper sulfate, hydrogen iodide, lead dioxide, etc.

Experiments on hydrogen peroxide and manganese dioxide to produce oxygen:

Experimental drugs: 3% hydrogen peroxide solution, small wooden strips, manganese dioxide solids.

Experimental Procedure. 1) Add a small amount of hydrogen peroxide solution to the test tube, put a small wooden strip with sparks on the mouth of the test tube, and observe the phenomenon (no obvious phenomenon).

2) Add a small amount of manganese dioxide to the test tube and observe the phenomenon (a large number of bubbles appear, the wood strip rekindles).

3) When the formation of bubbles is stopped, continue to add hydrogen peroxide solution and observe the phenomenon (a large number of bubbles appear, the wood strips re-ignite).

4) Chemical equation: 2H O (MNO catalyst) = 2H O + O Youno.

If you forget to add manganese dioxide when producing oxygen from hydrogen peroxide, the result is that the reaction rate slows down.

What is manganese dioxide:Manganese dioxide is an inorganic compound with the chemical formula mnO2, which is a black amorphous powder or black orthorhombic crystal, insoluble in water, weak acid, weak alkali, nitric acid, cold sulfuric acid, and dissolved in concentrated hydrochloric acid under heating to produce chlorine gas. It is used in the preparation of manganese salts, and is also used as an oxidant, rust remover, and catalyst.

What is hydrogen peroxide:Hydrogen peroxide is an inorganic compound with the 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.

Hazards of manganese dioxide: Manganese dioxide is a relatively common chemical material in daily life, mainly used in the production process of metals, batteries, etc., if only an appropriate amount of exposure to manganese dioxide in daily life, it will generally not cause obvious damage. However, excessive exposure to manganese dioxide may induce poisoning in humans.

What is oxygen: Oxygen is a kind of elemental element formed by oxygen, the chemical formula O2, its chemical properties are relatively active, and most elements can react with oxygen. It is not very active at room temperature, and it is not easy to interact with many substances.

However, it is very active at high temperatures and can be directly combined with a variety of elements, which is related to the electronegativity of oxygen atoms second only to fluorine.

The equation for hydrogen peroxide to produce oxygen: 2H O (MNO catalyst) 2H O+O

The advantages of hydrogen peroxide to oxygen production are as follows：1.Reaction at room temperature, no heating is required.

2.Fast reaction rate; Convenient for ** manganese dioxide.

3.The resulting oxygen is pure.

Because manganese dioxide acts as a catalyst in the decomposition of hydrogen peroxide. Therefore, the quality and chemical quality of the matching section before and after the manganese dioxide reaction remain unchanged. Therefore, manganese dioxide can be reused as a catalyst.

A small amount of manganese dioxide ignites into a large bottle of hydrogen peroxide, which will continue to decompose under the action of manganese dioxide. So it's all going bad.

mno22h2o2===2h2o+02

The following is the equation and experimental method, you can refer to the reaction equation of "oxygen production with hydrogen peroxide and manganese dioxide" is 2h, 0-2h, o+o. A research group conducted an experimental study on the decomposition of h,0 to generate h,o and o**. They conducted the following experiments:

Numbered Experiment Phenomenon 0 In a test tube containing 5 ml of 5% solution, the wooden strip does not rekindle into the wooden strip with sparks, and 2 into the 5 nl 5% hoIn the test tube of the solution, the strips are re-ignited and added to the AG mno, sticking into the strip of wood with Mars, question:

1) The purpose of the design experiment is to compare with , showing that manganese dioxide is a catalyst for the splitting of hydrogen peroxide to produce oxygen (2) If you want to prove whether MNO is the catalyst for the above reaction, you also need to check the quality and chemical properties of MNO after the reaction.