Which of the following substance can be used to remove water of crystallization from Epsom salt MgSO4.7H2O?
Dehydrating agents such as conc. H2SO4 are used to remove chemically combined water molecules from the compounds.
(a) Why does common salt get wet during the rainy season ?
(b) How can this impurity be removed ?
(c) Name a substance which changes the blue colour of copper sulphate crystals to white.
(d) Name two crystalline substances which do not contain water of crystallisation.
Which of the following can be used to remove temporary hardness of water?