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Hello, desalinated water is water that removes or reduces to a certain extent the strong electrolytes it contains that are easy to remove. The remaining salt content in the demineralized water should be between one and five milliliters per liter.
The electrolyte is the most traditional electrolyte, the medium of the chemical battery, which provides ions during the operation and guarantees that the chemical reactions that occur during the operation are reversible.
In summary, demineralized water is the removal or reduction of strong electrolytes, and electrolytes are mainly electrolytes.
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Desalted water is water that removes or reduces the amount of strong electrolytes that are easy to remove. The remaining salt content in the demineralized water should be 1 5
milligram liters. There are three main methods for preparing demineralized water: distillation, which heats and evaporates salt-containing water, and condenses the vapor to obtain desalinated water; In the ion exchange method, the saline water passes through an exchange column filled with bubbling zeolite or ion exchanger (see ion exchange), calcium and magnesium ions are left on the exchange column, and the filtered water is desalinated water; In the electrodialysis method, the cation and anion in the water between the two ion exchange membranes are concentrated to the cathode and anode respectively through the exchange membrane by means of the selective permeability of ion exchange membranes to ions under the action of an external electric field.
As a result, the intermembranous area becomes the freshwater area, and the extramembrane area is the concentrated water area. The water that emerges from the freshwater area is called desalinated water. The distillation method is mostly used in laboratories to scrub containers or prepare solutions, and is suitable for places with low quantity and high purity requirements.
Ion exchange method and electrodialysis method are mostly used in the chemical industry, such as boiler water, which can reduce fouling and corrosion, and are suitable for places with large quantities and low purity requirements.
Electrolyte is a term with a wide range of meanings, and it is used in different industries, and the content it represents varies greatly. There are electrolytes (also known as electrolytes) in living organisms, electrolytes used in the battery industry, and electrolytes for electrolytic capacitors and supercapacitors.
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During the experiment, bubbles emerge from the water continuously.
After the electricity is applied, under the action of the electric field, the negatively charged hydroxide and chloride ions move to the anode, and the positively charged sodium and hydrogen ions move to the cathode. At the anode, chloride ions are more likely to lose electrons than hydroxide capitol leakage and are oxidized into chlorine atoms, which combine in pairs to form chlorine molecules and release chlorine gas. At the cathode, hydrogen ions are easier to obtain electrons than sodium ions, so net ions continuously gain electrons from the cathode and are reduced to hydrogen atoms, and hydrogen atoms are combined in pairs to form hydrogen molecules, which release hydrogen from the cathode.
Industrially, sodium hydroxide is produced by electrolysis of salt water, and sodium chloride and sodium hypochlorite will be formed if the chloride ion is in contact with the sodium hydroxide solution.
Absolutely not, the production of electrolytes for lithium-ion batteries must be strictly dry. Moisture in the air causes the LIPF6 in the electrolyte to decompose and produce HF, PF3 and LIF, all of which are detrimental to the performance of the battery, so nitrogen is used to protect the production process.
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The height of the electrolyte level can be measured with a glass tube, and the liquid level should be 10-15mm higher than the plate (or estimated by visual inspection).If the electrolyte is insufficient, distilled water should be added, and the electrolyte should not be replenished, otherwise the density of the electrolyte in the battery will be changed. However, if it is confirmed that the electrolyte deficiency is due to spillage, the electrolyte can be replenished appropriately. >>>More
Distinguish between clear water and salt water] Experiment 1 [Equipment] Concentrated brine, clear water, graduated cylinder (cup), tray balance, beaker, etc. 【Steps】 Place two beakers of the same size (preferably 250 ml) on either side of the balance and adjust the balance to balance. Use a graduated cylinder (cup) to hold 200ml of water and concentrated salt water each, and pour them into two beakers respectively. >>>More
Here's an example of a topic.
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