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Electrolyte solution

  • Author:naky
  • Source:www.diecastingpartsupplier.com
  • Release on :2015-10-23
Conductive nature and unrelated solubility, strong electrolytes in general are: acid and alkali, most of the salt; weak electrolyte generally :( partially ionized water can only compound) weak base. In addition, the water is extremely weak electrolyte.

Electrolyte is not necessarily conductive, and only dissolved in water or molten state to a conductive ionized after the free movement of ions.
Conductive electrolyte can not necessarily determine whether a compound is an electrolyte, not just by its conductive or not in aqueous solution, also need to further investigate the nature of its crystal structure and chemical bonds of other factors. For example, it is determined, barium sulfate, calcium carbonate and iron hydroxide if the electrolyte. Barium sulfate is insoluble in water (solubility in water at 20 ℃ was 2.4 × 10-4g).

Determine whether the oxide electrolyte, but also for specific analysis. Nonmetallic oxides, such as SO2, SO3, P2O5, CO2, etc., which is a covalent type compound, when the liquid is not conductive, so it is not the electrolyte. Even some oxide in aqueous solution can be conductive, but not electrolytes. Because the reaction of these oxides with water to form a new electrically conductive material, not the original solution conductive oxides such as SO2 itself can not be ionized, and its reaction with water to form sulfurous acid, sulfurous acid as an electrolyte. Metal oxides such as Na2O, MgO, CaO, Al2O3 and other ionic compounds which can conduct electricity in a molten state, and therefore the electrolyte.

Visible, the electrolyte comprises an ionic or strong polar covalent compounds; non-electrolytes include weakly polar or non-polar covalent compounds. Aqueous electrolyte can conduct electricity, because the electrolyte can dissociate into ions. As to whether the substance in the water ionization, is determined by its structure. Therefore, the structure of matter to identify the nature of the electrolyte and non-electrolyte is a problem.
In addition, some of the electrically conductive material, such as copper, aluminum and the like are not the electrolyte. Because they are not capable of electrically conductive compounds, but elemental, does not meet the definition of an electrolyte.
Conductive electrolyte solution mechanism metal conductive mechanism is different. Metal is to rely on directional movement of free electrons and electrical conductivity, which is called the electron conductor, except the metal, graphite and certain metal oxides also belong to the electron conductor. The characteristics of such a conductor when the current through the conductor itself does not undergo any chemical change. Conductive electrolyte solution is to rely on directional movement of ions, it is known as ion conductors. But at the same time conducting such conductors must be accompanied on the pros and cons of electronic react electrode and solution interface: In general, anionic loses electrons oxidation reaction at the anode, the loss of electrons through the external circuit to the supply positive; cathode cationic get the negative external power supply to provide electronic reduction reaction occurs. Only in this way only the current through the entire circuit. And any cross-section of the loop, both the interface between the metal wire, the electrolytic solution, or between the electrode and the solution, at the same time, there must be the same through the power.