Information

Salts


What are salts? Definition:

salts are chemical compounds of anions (negatively charged ions) and cations (positively charged ions). It is popularly known to associate with salt above all the sodium salt of hydrochloric acid: sodium chloride (NaCl) or common salt. The above definition, however, is much broader and by far includes not only saline (picture: close up).
In principle, there are two groups of salts. The organic salts and inorganic salts, The former, unlike the latter, have at least one organic cation or anion. Organic means the presence of one or more carbon atoms. Accordingly, sodium chloride belongs to the inorganic salts because it consists of a chlorine anion (Cl-) and a sodium cation (Na+) consists.
An illustrative example of organic salts are soaps. These consist mainly of the sodium or potassium salts of fatty acid residues. A salt does not always necessarily have the consistency of table salt.

Sodium chloride:

As mentioned above, sodium chloride is probably the best known salt. The 'white gold' was already used in antiquity for the preservation of food. There has only been a marginal change in the extraction of salt to date. Still, large amounts of salt are produced by the evaporation of saline seawater. From a liter of seawater about 35g of salt. In ancient times, salt was so precious that it was even used as a means of payment. Due to the modern funding possibilities, one kilogram currently only costs a few cents.
Table salt is indispensable for the human organism. There are 9g of dissolved sodium chloride in the body per liter of blood. In the whole organism it is even 200 - 300g. Among other things, the regulation of the water balance and the function of the nervous system depend significantly on sodium chloride.

Properties of salts:

Salts are usually very soluble in water.
Salts consist of anions and cations.
Salts do not conduct electricity (but must not be bound in water!)
Salts have a fairly high melting point.
Salts are usually white or colorless.