Chemistry
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
Water
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Answer
(a) hydrated substance —
- Sodium carbonate decahydrate [Washing soda crystals] : Na2CO3.10H2O
- Copper (II) sulphate pentahydrate [Blue vitriol]: CuSO4.5H2O
(b) anhydrous substance —
- Anhydrous sodium chloride [table salt] : NaCl
- Nitre (KNO3)
(c) liquid drying agent —
- Sulphuric acid: H2SO4
- Phosphoric acid: H3PO4
(d) a basic drying agent —
- Quick lime: CaO
- Potassium carbonate: K2CO3
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