Halogens: properties, application for the example of chlorine.

| April 11, 2021 | education

Halogens are chemical elements of the main subgroup of group 7 of the periodic table of D.I. Mendeleev. Halogens include: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and tennesin (Ts) (conventionally, since it is an artificial element).

All halogens are non-metals and strong oxidizing agents. On the outer energy level, they have 7 electrons.

Chemical reactions characteristic of Cl:

Cl + CH3-CH3 = CH3-CH2Cl + HCl (with hydrocarbons);

Cl2 + 2Na = 2NaCl (with simple substances);

Cl2 + H2O = HCl + HClO;

Cl2 + 2KBr = 2KCl + Br2 (displaces Br);

Cu + Cl2 = CuCl2;

2H + Cl2 = 2HCl and many more reactions.

Chlorine is used both in industry and in agriculture. In agriculture, chlorine compounds are used in pest control. In industry, chlorine serves as a substance used in the production of HCl, in organic synthesis with the subsequent production of plastics, dyes, fibers. Both chlorine itself and its compounds are used for bleaching fabrics and paper.



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