Hydrated Salts are salts containing water of crystallization. The number of water molecules is indicated by mono, di, tri, tetra, penta etc. according to the number of water of crystallization.
In naming the corresponding anhydrous salt i.e without molecules of water, the salt is first named, followed by a full-stop, then the number of water molecules of water is written down. Example:
IUPAC NAME | HYDRATED SALT |
Sodium trioxocarbonate (IV) decahydrate | Na2CO3.10H2O |
Copper(II) tetraoxosulphate (VI) pentahydrate | CuSO4.5H2O |
Cobalt (II) Chloride hexahydrate | COCl2.6H2O |
Theory Questions
1. Write down the formulae of the following:Â
(i) Ozone
(ii) Hydrogen sulphate
(iii) Magnesium tetraoxosulphate(VI)
(iv)Oxygen molecule
(v) Bromine molecule
2. Calculate the Oxidation number of the underlined elements
(a) H2SO4
(b) CO2
(c) NaH
(d) Cr2O
(e) FeCl2
(f) NaMnO4
3. Give the IUPAC name of the following compounds
(a) MgO
(b) NaSO4
(c) FeO3
(d) Al2O3
4.
(a) Give the symbols of the following elements:
(i) Silicon         Â
(ii) ChlorineÂ
(iii) Silver         Â
(iv) Potassium
(b) Name the elements with the following symbols:
(i) Sn
(ii) Br
(iii) Cr
(iv) Be
Responses