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How many molecules of water of crystallisation (per formula unit) are present in :
(a) copper sulphate crystals ?
(b) washing soda?
(c) gypsum ?
(a) 5 molecules of water of crystallisation (per formula unit) are present in copper sulphate crystals.
(b) 10 molecules of water of crystallisation (per formula unit) are present in washing soda.
(c) 2 molecules of water of crystallisation (per formula unit) are present in gypsum.
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