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15 May, 12:40

Preparation for plaster of Paris

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  1. 15 May, 14:18
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    Plaster of Paris is prepared by heating gypsum [which is chemically calcium sulphate dihydrate (CaSO4.2H2O) ] at 373 K. On heating at 373 K, gypsum loses water molecules and becomes Plaster of Paris, which has the chemical name calcium sulphate hemihydrate. Its chemical formula is CaSO4.1/2H2O.
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