The chemical equation for electrolysis of water is ______

Chemical equation for electrolysis of water

Chemical equation for the reaction of decomposition of water to generate hydrogen and l oxygen in the condition of electricity. :

2H?O=Electrification=2H?↑+O?↑

During the electrolysis of water, the anode produces oxygen and the cathode produces hydrogen

There are hydrogen ions and hydroxyl ions in water. Under the condition of electricity in water, hydrogen ions. move towards the cathode. The four hydrogen ions lose four charges and produce two hydrogen molecules, the hydroxide The ions move towards the anode and after losing 4 electrons from the 4 hydroxide ions, 2 water molecules and. an oxygen molecule are produced

Detailed information:

After the electrolysis of pure water, only hydroxide ions, hydrogen gas, oxygen and hydrogen ions will be produced.

Electrolyzed water generally refers to the product generated after electrolysis of water containing salt (such as sodium sulfate, table salt is not allowed and chlorine gas will be generated ). The electrolyzed water itself is neutral and other ions can be added, or it can be separated by a semi-permeable membrane to generate water with two properties. One of them is alkaline ionized water and the other is acidic ionized water.

Electrolyzed water using sodium chloride as the electrolyte contained in water will contain sodium hydroxide, hypochlorous acid and sodium hypochlorite after electrolysis.

Electrolyzed water generally refers to the product generated after the electrolysis of water conholding salt (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 generate water with two properties. One of them is alkaline ionized water and the other is acidic ionized water. Electrolyzed water using sodium chloride as the electrolyte contained in water will contain sodium hydroxide, hypochlorous acid and sodium hypochlorite after electrolysis (if pure water undergoes electrolysis, only the hydroxide ions, hydrogen gas, oxygen and hydrogen ions will be produced).

Under certain conditions, the acidic electrolyzed water produced after electrolysis can be used for sterilization. Oxygen generated at the electrode based on the principle of electrolysis will combine with chlorine to form an aqueous solution of hypochlorite or chlorite ions at a lower pH value (e.g. pH < 2.7) .

In addition, although some claim that electrolyzed alkaline water can "neutralize the acidic body", in fact, when the alkaline water produced by electrolysis reaches the stomach, it will be transformed into acid by the highly acidic stomach acid. .

Baidu Encyclopedia - Water Electrolysis

The equation of water electrolysis

The equation chemical of water electrolysis: 2H2O== =2H2↑+O2 ↑ (under voltage). This means that hydrogen and oxygen are produced when the water is energized. Electrolyzed water generally refers to the product obtained after the electrolysis of water containing salt (such as sodium chloride) things.

Detailed information

Gas produced by the negative electrode of electrolyzed water

The negative electrode of electrolyzed water will generate hydrogen gas . Hydrogen, with chemical formula H? and with a molecular weight of 2.01588, is extremely flammable at temperatures and pressuresnormal. Colorless, transparent, odorless and tasteless gas, insoluble in water. Hydrogen is the gas with the lowest known density in the world. The density of hydrogen is only 1/14 that of air, i.e. at 1 standard atmosphere and 0°C, the density of hydrogen is 0.089 g/ L. Hydrogen is the substance with the smallest relative molecular mass and has strong reducing properties. It is often used as a reducing agent to participate in chemical reactions.

Gas produced by electrolysis of water at the positive electrode

Oxygen is generated by electrolysis of water at the positive electrode . Oxygen is a colorless, odorless gas and the most common elemental form of the element oxygen. Melting point -218.4℃, boiling point -183℃. Slightly soluble in water, approximately 30 ml of oxygen are dissolved in 1 liter of water. Oxygen makes up about 21% of air.

H. + :O: (There are twoelectrons above the O atom) + .H ----> H:O:H (There are also two electrons above the O atom) and below the O atom. Two electrons )

Water, with the chemical formula HO, is an inorganic substance composed of hydrogen and oxygen. It is non-toxic and drinkable. It is a colorless and odorless transparent liquid at normal temperature and pressure, known as the source of human life. Water is one of the most common substances on earth. It is an important resource for the survival of all life, including inorganics and humans. It is also the most important component of living organisms. ?

Detailed information

The enthalpy of formation of water is very high, ΔfHmθ=-285.8 kJ/mol, so the thermal stability Well, its dissociation is less than one percent at a high temperature of 2000 K; its large specific heat capacity: 75.3 J/(mol·℃) can effectively regulate the tetemperature.

Many common gases can be dissolved in water, such as hydrogen, oxygen, nitrogen, carbon dioxide, inert gases, etc. The solubility of these gases is related to factors such as temperature, pressure and gas phase. partial pressure.