What is a double salt?

Simple or "individual" salts consist of one "cationic" or positively charged, components and one "anionic" or negatively charged ingredients - each salt resulting from the chemical combination of acid with base. Double salt is similar, except that it requires two specific conditions. There must be either two cation components or two anion components, and both salts must be able to regularly crystallize together. The second salt gives the latter ownership the appearance that one pure substance, rather than two separate substances. In fact, the crystallized double salt is a solid solution.

There are a number of well -known double salts in the kitchen. One of these double salts is a aluminum, chemical chemical aluminum with delivery aluminum - sludge (so _{4 ) 2}

It is used in commercial food preparation, sodium with double salt, tetrahydrate, is better known as Rochelle salt - KNA (c _{4 4 o 6 ) 4h 2 Although it is sometimes used for cosmetics cosmetics. Buffering is a feature of maintaining almost constant pH in the presence of incremental addition of acids or bases. This double salt was one of the first substances known to make electricity when its crystals are squeezedENY; This phenomenon is called a "piezoelectric effect". Another historical use of Rochelle Salt was in the process of a silver mirror.}

The magnificent ongoing interest is double salts that show metalophile interactions. These interactions are electronic interactions with a closed shell in which metals have d ¹⁰

8 electron configuration. In crystalline form, double salt molecules are aligned according to the design to actually produce electric wires or pipes with one atom. Such wires are "isolated" by organic portions - called ligands - their double salt structures. Facilities using such wires are particularly interesting for communication, but although they have been monitored for decades, practical use has not yet been achieved.