7. Give the names and formulae of two substances in each
case
(a) hydrated substance (b) anhydrous substance
(c) liquid drying agent (d) a basic drying agent
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(a)A hydrated is a substance that contains water or its constituent elements.
1) Glauber's salt => Sodium Sulfate Decahydrate=Na2SO4∙10H2O
2) Washing soda=> Sodium Carbonate Decahydrate=Na2CO3∙10H2O
(b)Anhydrous literally means "no water." Substances without water are called anhydrous.
1) Copper(II) Sulfate Pentahydrate=CuSO. 5H2O
2) Acetic Anhydride=CH3COOCOCH3
(c) Liquid drying agent removes water from a substrate.
1) Calcium Chloride=CaCl2
2) Sodium Sulfate=Na2SO4
(d) A drying agent is a chemical which is used to remove water from an organic compound that is in solution.
1) Calcium Sulfate=CaSO4
2) Magnesium Sulphate=MgSO4
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