What is the process of electrolysis of water?

What level is this question at? Junior high school? High school? Or a university?

If it is a junior high school, then my explanation is that it is the water molecule that changes, and the hydrogen atom and the oxygen atom that do not change, and the hydrogen molecule and the oxygen molecule are formed.

In the case of high school, hydrogen ions and hydroxide ions are changed, and water molecules are formed, and hydrogen molecules and oxygen molecules are generated.

The difference between the two theories is that the process of hydrolysis is as follows: first, water, as a weak electrolyte, will ionize into H+ and OH-, and after the two ions are energized, they will change to form hydrogen molecules and oxygen molecules. However, the ionization of water is not required in the junior high school stage. So there is a difference in the narrative.

Of course, my chemistry is not very good, and the teacher casually mentioned the following in class, and I am not sure that this is the case. But that's right.

As for the explanation of the university, I don't know, after all, I'm only a sophomore in high school.

Junior high school chemical electrolysis of water experiment.

The particles that change during the electrolysis of water are hydrogen ions, hydroxide ions.

The particles that change are ( hydrogen ions, hydroxide ions ), the particles that remain unchanged are ( water molecules, nano ions ), and the new particles that are formed are ( water molecules ).

In chemical change, molecules are separable and atoms are indivisible.

They are molecules, atoms, hydrogen molecules, and oxygen molecules.

The particles that change are hydrogen ions, hydroxide ions.

Question 1: The following diagram is a schematic diagram of the decomposition process of water molecules in electrolyzed water What kind of laws or conclusions can you draw from the schematic diagram of the process of water decomposition (1) According to the schematic diagram of the electrolysis of water particles, it can be seen that water molecules, hydrogen molecules, and oxygen molecules are all composed of atoms, that is, molecules are composed of atoms; Comparing the changes before and after, it can be found that the types and numbers of hydrogen atoms and oxygen atoms constituting water molecules before the reaction and hydrogen atoms constituting hydrogen molecules and oxygen atoms constituting oxygen molecules after the reaction remain unchanged, that is, the types and numbers of atoms before and after the reaction remain unchanged. Comparing the whole process, it can also be found that in the process of change, the molecule is decomposed into atoms, but the atoms do not continue to decompose but recombine into new molecules, that is, in the process of chemical change, the molecules can be redivided into atoms, and the atoms can not be redivided; Therefore, the answer is: (1) the essence of chemical change is that the molecule is divided into atoms, and the atoms are recombined into new molecules (2) water is composed of hydrogen and oxygen (3) a water molecule is composed of two hydrogen atoms and one oxygen atom

Total reaction: 2al+2oh-+2h2o=2alo2-+3h2 alal: 2al-6e-+8oh-=2alo2-+4h2omg pole:

6h2o+6e-6oh-=3h2 can be written as a galvanic cell:

Negative: Al-3E + 4OH (-) Al(OH)4 (-) Positive: 2H2O + 2E = 2OH (-) H2 Total Reaction: 2AL + 2OH (-) 6H2O = 2AL (OH) 4 (-) 3H2

Water can be electrolyzed to produce hydrogen and oxygen. Water electrolysis is a chemical experiment that uses water decomposition and synthesis experiments to understand that water is composed of hydrogen and oxygen. The main supplies are Hoffman electrolyzers, DC power supplies (or lead-acid batteries), wires, test tubes, alcohol lamps, measuring tubes, induction coils, electric keys, iron frames, iron clamps, gas storage cylinders, glass sinks, etc.

Water electrolysis: Water can be decomposed into hydrogen and oxygen under the action of direct current. When electric sparks pass through hydrogen and oxygen mixed with gas, they are synthesized into water.

Both of these experiments show that water is composed of hydrogen and oxygen, and it can also be seen from the experimental results that the volume ratio of its losers is 2 1.

The production of hydrogen and oxygen by electrolysis of water is a well-known technology, the basic principle of which is that water is converted into gaseous hydrogen and oxygen by direct current electricity, which is the reverse process of fuel cells. Nicholson and Carlyle first demonstrated the process of water electrolysis in 1800. Faraday clarified the principle of water electrolysis in 1934 and proposed the concept of electrolysis.

The electrolysis of hydrogen from water for commercial use was first started by Oerlikon Engineering in 1902.

Depending on the operating temperature, there are two main types of electrolyzers: low-temperature electrolysis technology and high-temperature electrolysis. LTE is divided into two types: alkaline electrolyzers and proton exchange membrane electrolyzers, both of which have been commercially operated and can achieve an energy efficiency of about 75%.

Alkaline water electrolysis technology using potassium hydroxide aqueous solution as an electrolyte is a mature technology that accounts for the vast majority of the market for commercial water electrolyzers, and the main R&D problem in the future is to reduce the cost of electrolysis equipment while improving energy efficiency. Alkaline electrolyte membranes are under development, and their success will lead to significant advances in water electrolysis technology.

The separation membrane is used as the medium to apply direct current voltage in the water, and the electrolytic plate is used to decompose the water, and then the alkaline water and acidic water are separated. Because the minerals such as calcium, magnesium, sodium, and potassium in the water are mostly gathered at the cathode, the hydroxide ion (OH-) increases and becomes alkaline water, also known as reduced water, which is suitable for drinking and health care. Oxygen, sulfuric acid, sulfur, etc. are induced to the anode, increasing hydrogen ions (H+) to form acidic water, also known as oxidized water. Suitable for cleaning, disinfection, beauty, etc.

Due to the action of hydrogen bonding, tap water is usually composed of 13-15 small molecular clusters, and the water enters the electrolyzer, and the hydrogen bonds of the water molecules are opened under the action of the electric field, resulting in small molecular clusters composed of 5-6 water molecules. At the same time, under the action of the electric field, part of the cations in the solution Ca2+, Mg2+, K+, H+, etc. move to the cathode, according to the strength of the electron ability, the H ion is reduced, and the electron becomes hydrogen, due to the decrease in the concentration of H ions, the concentration of hydroxide ions increases, the water is weakly alkaline, the pH value is greater than 7, and the water generated by this pole is called alkaline water. At the same time, at the anode, some anions CL-, SO42-, NO3-, NO2-, OH-, etc. move to the anode, and among the many anions, hydroxide ions are the most likely to lose electrons, so the oxidation reaction occurs, and the electrons are lost to produce oxygen and water.

As the concentration of hydroxide ions decreases, the concentration of H ions increases, and the water body is weakly acidic, with a pH value of less than 7, and the water generated by this pole is called acidic ionized water.

The chemical equation that occurs at the poles is:

On the cathode, 2H2O+2E=2Oh-+H2

On the anode, 2H2O-4E = 4H++O2

I think electrolyzed water can be used for health care at most, and liposuction is not possible**!

Personally, I don't think it's OK to drink it for a long time!