Oxidation with chlorine

Chlorine is a stronger oxidant than oxygen. Therefore, oxidation with chlorine is often used in various kinds of experiments. With chlorine, metals such as gold and platinum, forming compounds AuCl3 and PtCl4. Chlorine is very active - it directly combines with almost all elements of the periodic system. Therefore, in nature it is found only in the form of compounds in the composition of minerals: halite NaCl, silvin KCl, sylvinite KCl*NaCl.

Chlorine is a stronger oxidant than oxygen. Therefore, oxidation with chlorine is often used in various kinds of experiments

It is possible to demonstrate the vigorous oxidation of antimony and copper metals by chlorine. Pieces of antimony must be grinded well in a mortar, after which a little grated antimony to warm on a spirit lamp on the tip of a metal spatula and gradually, gently tapping on the spatula, pour into a glass with chlorine. Small pieces of antimony will be combined with a flash with chlorine; it seems like a fire rain. Oxidation with chlorine occurs by the following reaction:

2Sb + 3Cl2 = 2SbCl3.

After the experiment, the glass with chlorine must be closed with a stopper, so as not to inhale the harmful vapor of antimony trichloride.

A simple chlorine substance under normal conditions is a poisonous gas of a yellowish green color, heavier than air, with a pungent smell and a sweetish, "metallic" taste. The chlorine molecule is diatomic - Cl2. Chlorine was obtained in 1774 by the Swedish chemist Carl Wilhelm Scheele, who described its release during the interaction of pyrolusite with hydrochloric acid in his treatise on pyrolusite. The valence level of the chlorine atom contains 1s2 2s2 2p6 3s2 3p5, so the valence is 1 for the chlorine atom is very stable. Due to the presence in the chlorine atom of the unoccupied orbitals of the d-sublevel, the chlorine atom may exhibit other oxidation states.

Oxidation with chlorine plays an important role in the regulation of osmotic processes, as well as in the processes associated with the work nerve cells.

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