C 1- is the chemical name chloride ion. That is, the chlorine atom gains an electron and forms a valence ion of-1, or a negatively charged ion. Chloride ion (Cl-) is the-1 valence ion of chlorine widely existing in nature. Chloride ion is the most abundant anion in organisms.

Characteristics of chloride ion:

Chloride ion is a common name for hydrochloric acid, and it is an aqueous solution of hydrogen chloride (HCl) gas. It is a colorless, transparent or yellow strong acid with pungent smell and strong corrosiveness. Soluble in water, ethanol, ether and oil.

Chloride ion is very volatile, so white mist can be seen above the container filled with concentrated chloride ion after opening, which is actually chloride ion droplets produced by the combination of hydrogen chloride volatilization and water vapor in the air.

The relative molecular weight of chloride ion is 36.46. Concentrated chloride ion is an aqueous solution containing 38% hydrogen chloride, with a relative density of 1. 19, a melting point of-1 12℃ and a boiling point of -83.7℃. 3.6% chloride ion, and the pH value is 0. 1.

Refer to the above content: Baidu Encyclopedia-Chloride Ion