Answer to Question #5178 in Organic Chemistry for MUHAMMAD SHAMIM
The notation of hydrous compound • nH2O, where n is the number of water molecules per formula unit of the salt, is commonly used to show that a salt is hydrated. The n is usually a low integer, though it is possible for fractional values to exist. In a monohydrate n is one, in a hexahydrate n is 6 etc. (typical prefixes are mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca).
Also there is another variant of the nomenclature: the IUPAC(International Union of Pure and Applied Chemistry).
According to this rules:
Trisodium citrate undecahydrat
Trisodium 2-hydroxypropane-1,2,3-tricarboxylate undecahydrat (IUPAC)
Potassium sodium tartrate tetrahydrat
Potassium sodium (2R,3R)-2,3-dihydroxybutanedioate tetrahydrat (IUPAC)
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