Which of the following salts does not contain water of crysatallisation
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Salts like Potassium Chloride, Barium Sulphate, Sodium Nitrate, Potassium Nitrate do not contain any water of crystallization.Blue vitriol is copper sulphate pentahydrate CuSO4⋅5H2O. It has 5 moles of water.
Washing soda is sodium carbonate monohydrate Na2CO3⋅H2O
Gypsum is calcium sulphate dihydrateCaSO4⋅2H2O. It can be used as a fertilizer,a main constituent in many forms of plaster and in blackboard chalk.
Baking soda is sodium bicarbonate in anhydrous form without any water of crystallisation and it is widely used as dry fire extinguisher because of its alkali nature.
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