Please write a verbal expression for the production of oxygen from a mixture of hydrogen peroxide an

1) Write: Write the chemical formulas of reactants and products based on experimental facts. The reactant is on the left, the product is on the right, and the middle is connected by a horizontal line, such as:

h2＋o2——h2o，h2o——h2＋o2。(2) Matching: According to the principle that the type and number of atoms before and after the reaction are unchanged, the appropriate stoichiometric number is matched before the chemical formula of the reactants and products, so that the number of atoms of various elements is equal before and after the reaction.

Then turn the horizontal line into an equal sign. After trimming, the ratio of stoichiometric numbers before the chemical formula should be the simplest integer ratio, such as: 2h2 o2 2h2o, 2h2o 2h2 o2.

3) Note: Indicate the reaction conditions [such as ignition, heating (commonly used ""), light, energization, etc., and the state of the product (gas with "precipitation" "such as: 2H2 O2 ignite 2H2O, 2H2O energized 2H2 O2.

Hydrogen peroxide and manganese dioxide.

A chemical equation for mixing oxygen to produce it.

How to write 2h2o2 2h2o o2mno2 is the catalyst.

Hydrogen peroxide is catalyzed by manganese dioxide to produce hydrogen, and oxygen.

Hydrogen peroxide is equal to the addition of manganese dioxide = water and oxygen on top.

Hydrogen peroxide. — water + oxygen (manganese dioxide above the arrow); Chemical equation: 2HO (MNO catalyst) ==2HO+O. Hydrogen peroxide, its aqueous solution, is commonly known as hydrogen peroxide.

It is a colorless transparent liquid and is a strong oxidizing agent.

Methods for producing oxygen in the laboratory

1. Use potassium permanganate.

Or potassium chlorate oxygen sorting device: solid and solid plus shouting clever hot gas (commonly used in the laboratory: solid heating type).

2. Oxygen to hydrogen peroxide and B selection device: liquid and solid are not heated to produce gas (commonly used in the laboratory: solid-liquid room temperature type).

Oxygen is the key substance for the human body to metabolize and is the first need for human life activities. The oxygen that is breathed is converted into oxygen that is available in the body, called blood oxygen.

The blood carries blood oxygen to the whole body to inject osmotic energy, and the amount of blood oxygen delivered is closely related to the working state of the heart and brain.

Hydrogen peroxide. — Water + oxygen (manganese dioxide.

above the arrow); Chemical equation.

2HO (MNO catalyst) ==2HO+O. The aqueous solution of hydrogen peroxide, commonly known as hydrogen peroxide, is a colorless and transparent liquid in appearance, and is a strong oxidant.

Hydrogen peroxide is usually prepared into an aqueous solution, and hydrogen peroxide is used for rolling old.

The use of hydrogen peroxide is divided into three types: medical, military and industrial, and the daily disinfection is medical hydrogen peroxide, which can kill intestinal pathogenic bacteria, pyogenic cocci and pathogenic yeast.

It is generally used for disinfection of object surfaces. Hydrogen peroxide has an oxidation effect, but the concentration of medical hydrogen peroxide is equal to or less than 3%, wipe to the wound surface, the return limb will have a burning sensation, the surface is oxidized to white and bubbles, wash it with water, and return to the original skin color after 3-5 minutes.

It is used in the chemical industry to produce sodium perborate and sodium percarbonate.

Peracetic acid, sodium chlorite, thiourea peroxide.

and other raw materials, tartaric acid.

Oxidants of vitamins and the like. It is used in the pharmaceutical industry as a fungicide, disinfectant, and an oxidant for the production of Fumei double insecticide and 40L antimicrobial agent. In the printing and dyeing industry, it is used as a bleaching agent for cotton fabrics to restore the hair color after dyeing.

It is used to remove iron and other heavy metals in the production of metal salts or other compounds. It is also used in electroplating solution to remove inorganic impurities and improve the quality of plated parts. It is also used for bleaching wool, raw silk, ivory, pulp, fat, etc.

High concentrations of hydrogen peroxide can be used as an accelerant for rocket power.

Civil: to deal with the peculiar smell of the kitchen sewer, buy hydrogen peroxide at the pharmacy and pour water and laundry detergent into the sewer to decontaminate, disinfect and sterilize; 3% hydrogen peroxide (medical grade) for wound disinfection.

Verbal expression: hydrogen peroxide - manganese dioxide water + oxygen.

Chemical equation: 2H2O2=MNO2=2H2O+O2

1 Hydrogen peroxide — water + oxygen — Reaction conditions are written above Manganese dioxide.

2 Potassium permanganate — Potassium manganese balanate + carbon dioxide + oxygen pre-gas — Reaction conditions are written above Heating.

Potassium permanganate - (heated excitation buried) local potassium manganate + carbon dioxide + oxygen.

KMno4 - (K2mnO4 + CO2 + O2 Perluminescent Hydrogen Oxide - (Manganese Dioxide) Water + Oxygen.

h2o2——（mno2）h2o+o2↑

Hydrogen peroxide is also known as hydrogen peroxide, and the chemical expression is: hydrogen peroxide (H2O2)—MNO2 - water (H2O) + oxygen (O2).

Chemical change is prevalent in production and life. The change that produces a new substance is a chemical change. Such as the rust of iron, the fireworks of festivals, the neutralization of acid and alkali, the burning of magnesium strips, and so on.

On a macroscopic scale, it can be seen that various chemical changes produce new substances, which is characteristic of chemical changes. Summary: A change in a new substance is a chemical change.

A chemical reaction is a process in which atoms or electrons are converted or transferred between molecules that are in contact with each other to form new molecules accompanied by changes in energy. The chemical change is essentially the breaking of the old bond and the formation of a new bond. The process of chemical change is often accompanied by physical change. In the process of chemical change, there are usually luminescence, exothermia, and endothermy.

According to the atomic collision theory, the chemical change between molecules is accomplished by collision, and two conditions are required to complete the collision reaction molecule: (1) sufficient energy and (2) correct orientation. Because the reaction needs to overcome a certain molecular energy barrier, it must have a higher energy to overcome the molecular energy barrier. Two colliding molecules must have the correct orientation for the old bond to break.

The above device can be used to produce oxygen by using hydrogen peroxide and manganese dioxide, and the text expression of the reaction (and write the chemical formula of the substance after the text) is:

Hydrogen peroxide (H2O2), water (H2O) + oxygen (O2).

Potassium chlorate === (manganese dioxide above the equal sign, below ) potassium chloride + oxygen.

Chemical equation: 2kClO3=== (manganese dioxide above the equal sign, manganese dioxide below) 2kCl+3O2

Potassium chlorate = (manganese dioxide) = potassium chloride + oxygen.

It's a single arrow. Write manganese dioxide above the single arrow, and heat below it.

The energy required for the reaction is low, and the reaction can be carried out at room temperature.

The oxygen produced is of high purity and basically does not contain other impurities except water vapor.

The operation is simple, no heating is required, and the risk factor is small.

The products after the reaction are water and oxygen, and the products have no pollution to the environment; And manganese dioxide can be reused as a catalyst to save resources.

Pros:1No contamination.

2.Save on medicines.

3.Easy to operate.

4.Security 5No heating.

Hydrogen peroxide solution to oxygen production steps:

Connecting devices. Check the airtightness of the device.

Then fill the Erlenmeyer flask with manganese dioxide.

Pour in hydrogen peroxide solution.

Collect oxygen. The chemical equation for oxygen preparation from hydrogen peroxide solution is: 2H2O2=MNO2=2H2O+O2

Reaction at room temperature, no heating required (or easy to operate);

Fast reaction rate;

Convenient for ** manganese dioxide;

The resulting oxygen is pure (or pollution-free).

It is to accelerate the production of oxygen, and manganese dioxide as a catalyst will not change.