The reaction to generate hydrogen, how is hydrogen generated?

Pinch the bottle tightly to expel the air; 3。Until the collection is full.

The collected hydrogen cylinder can be capped with glass and placed upside down somewhere. Turn the bottle upside down. Small amounts of hydrogen are generally prepared in test tubes.

Take test tubes, for example. After collecting the full bottles, the vinegar is discharged very slowly to produce hydrogen gas: the skin of the disposable battery is peeled off.

Add dilute sulfuric acid to 1, collect the gas, and the bottle dissolves. The generator is complete.

Collecting device, gas collection bottle filled with water upside down in the sink: fill a large sink with water. 10 minutes after the device reaction occurs, the glass straight tube is inserted into the inverted gas collection cylinder.

The phenomenon is quiet burning, throwing a few pieces of ZN; 4 1, lit, pour in 1 5 bottles of vinegar: the main reaction is generally zinc tablets (or zinc granules) thrown into dilute sulfuric acid to dissolve to produce hydrogen, the end of the rubber hose is connected to a glass straight pipe, placed in a soft plastic bottle.

At home, I do that. Prepare more commonly used flasks, and cover them with single-hole rubber stoppers (with right-angle glass tubes and rubber hoses).

First, fix the test tube on an iron frame.

Reaction to generate hydrogen: The main reaction is generally to throw zinc flakes (or zinc grains) into dilute sulfuric acid to dissolve to produce hydrogen. Small amounts of hydrogen are generally prepared in test tubes. More commonly used flasks are prepared. Take test tubes, for example.

First, fix the test tube on an iron frame. Add dilute sulfuric acid to 1 4 1 3, throw in a few pieces of zn, cover with a single-hole rubber plug (with right-angle glass tube and rubber hose), and connect the end of the rubber hose with a glass straight tube. The generator is complete.

Collecting device: Fill a large tank with water, and fill the gas collection bottle with water and buckle it upside down in the tank. 10 minutes after the device reaction occurs, the glass straight tube is inserted into the inverted gas collection cylinder. Until the collection is full.

The collected hydrogen cylinder can be capped with glass and placed upside down somewhere.

At home I do this: peel off the skin of the disposable battery, put it in a soft plastic bottle, pour 1 5 bottles of vinegar, pinch the bottle tightly to drive the air out. Turn the bottle upside down and drain the vinegar very slowly to collect the gas.

After collecting a full bottle, light it. The phenomenon is quiet burning, and the bottle melts.

The displacement reaction of the metal with a weak acid can produce hydrogen gas (the order of activity of the metal must be shot before the hydrogen) e.g. Fe + 2HCl = H2 + FeCl2

Water is sealed with charcoal and heated to produce hydrogen by redox reaction

c+h2o=co↑+h2↑

The decomposition reaction of electrolysis of water can produce hydrogen: 2H2O = (Energized is written above the equal sign) 2H2 + O2

Another thing that is a little more advanced is that the top 4 metals in terms of metal activity can react with water to form hydrogen, such as:

ca+h2o=cao+h2↑

1) Zinc, magnesium, iron and other metals react with non-oxidizing acids.

2) Reaction between aluminum and sodium hydroxide solution.

3) Sodium, magnesium, iron and other metals react with water at a certain temperature 4) Sodium (potassium, magnesium, aluminum) reacts with alcohols.

5) Coke reacts with water at high temperature.

6) Electrolysis of water.

7) Methane pyrolysis.

Among them, (1) and (2) are suitable for the preparation of small amounts of hydrogen in laboratories; (5), (7) can be used for industrial hydrogen production; (6) It may be the future of clean energy.

Phenomena and equations for the reaction of chlorine and hydrogen.

Industrial methods for producing hydrogen:

1. Water gas method (main components CO and H2), carbon and water are reacted to generate carbon monoxide and hydrogen under high temperature conditions, and the reaction equation is as follows

2. The method of electrolysis of water to produce hydrogen, electrolysis of water under the condition of electricity, the generation of oxygen and hydrogen, the reaction equation is as follows:

3. Electrolysis of saturated brine, sodium chloride and water under the condition of electricity to generate sodium hydroxide, hydrogen and oxygen, the reaction equation is as follows:

Electrolyzed water generally refers to the product produced by the electrolysis of water containing salts (such as sodium chloride). The electrolyzed water itself is neutral and other ions can be added, or it can be separated by a semi-permeable membrane to form water with both properties.

One of them is alkaline ionized water and the other is acidic ionized water. Electrolyzed water with sodium chloride as the electrolyte contained in water will contain sodium hydroxide, hypochlorous acid and sodium hypochlorite after electrolysis (if pure water is electrolyzed, only hydroxide ions, hydrogen gas, oxygen and hydrogen ions will be produced).

How hydrogen is produced: Metals react with non-oxidizing acids to produce hydrogen; The active metal reacts with water to produce hydrogen.

1. Metals react with non-oxidizing acids.

2. Reactive metals react with water, such as sodium metal.

3. Reaction between metal aluminum and sodium hydroxide.

4. Silicon reacts with sodium hydroxide.

5. Electrolysis: electrolysis of water, electrolysis of strong acids, strong alkalis, electrolysis of strong acids and alkali salts (such as sodium chloride).

6. Thermal decomposition of methane.

7. Reaction of carbon and water (reaction of water gas).

8. Different hydrogen production methods have different fixed investment amounts and marginal costs. The energy and fuel used to produce hydrogen can come from a variety of sources such as natural gas, nuclear, solar, wind, biofuels, coal mines, other fossil fuels, and geothermal. (The following is based on the assumption that all cars in the U.S. will be converted to hydrogen.)

9. The purification methods of hydrogen can be roughly divided into two categories (physical method and chemical method), hydrogen purification methods mainly include low-temperature adsorption method, low-temperature liquefaction method, and metal hydride hydrogen purification method; In addition, there are six methods, including palladium film diffusion method, hollow fiber membrane diffusion method and pressure swing adsorption method.

Basic information: 1. Hydrogen is a highly flammable, colorless and transparent, odorless and tasteless gas that is insoluble in water, with a chemical formula of H.

2. Hydrogen is the smallest known gas in the world in terms of density and relative molecular mass, and can be used as a filling gas for airships and hydrogen balloons. In February 2018, China achieved low-temperature preparation and storage of hydrogen, and won the 2017 Top Ten Scientific Progress in China by the Ministry of Science and Technology.

1. The displacement reaction of metal and weak acid can generate hydrogen gas (the order of activity of the metal must be patted in front of hydrogen): Fe + 2HCl = H2 + FeCl2;

2. Water and carbon are sealed and heated to produce hydrogen by redox reaction: C+H2O=Co +H2;

3. The decomposition reaction of electrolysis of water can generate hydrogen: 2H2O = (equal sign on the banquet Huai scattered side writing energized) 2H2 + O2;

4. The top 4 metals in terms of metal activity can react with water to form hydrogen.

Hydrogen and oxygen produce water under ignition conditions.

Hydrogen is stable at room temperature, and can react with many substances under the condition of ignition or heating. Ignition of impure hydrogen gas can occur**, it must be verified before igniting hydrogen, similarly, deuterium (heavy hydrogen) ignition in oxygen can produce heavy water (d o)).

How is hydrogen produced?

1. Metals react with non-oxidizing acids.

2. Reactive metals react with water, such as sodium metal.

3. Reaction between metal aluminum and sodium hydroxide.

4. Silicon reacts with sodium hydroxide.

5. Electrolysis: electrolysis of water, electrolysis of strong acids, strong alkalis, electrolysis of strong acids and alkali salts (such as sodium chloride) 6, thermal decomposition of methane.

7. Reaction of carbon and water (reaction of water gas).

There are so many common ones, I hope you can be satisfied!

How is hydrogen produced in a hydrogen engine?

It is obtained by the chemical reaction of hydrogen and nitrogen in the air under the conditions of a high-temperature and high-pressure catalyst.

How to make hydrogen?

Electrolysis. Household electricity is definitely not good, buy some batteries, + wiring can be collected in water, but the fibrillation is slower and the cost is high.

Get some lively metal, just use vinegar, preferably zinc, where to buy it is really a problem. Aluminum is not good, iron is not good, these two metal surfaces have oxides, and you open a new opening, immediately generate oxides, very corrosion-resistant, vinegar basically will not react, strong acid is not safe. It seems that there is no such thing in the pure iron market, right?

Iron in general is 3 iron oxide 2 iron, right?