Science
Which of the following salts do not have the water of crystallisation?
(i) Bleaching Powder
(ii) Plaster of Paris
(iii) Washing soda
(iv) Baking soda
- (ii) and (iv)
- (i) and (iii)
- (ii) and (iii)
- (i) and (iv)
Water
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Answer
(i) and (iv)
Reason — Bleaching Powder [CaOCl2] and baking soda [NaHCO3] do not have water of crystallization whereas plaster of Paris [CaSO4. H2O] and washing soda [Na2CO3.10H2O] have.
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