Question

Explain the formation of plaster of Paris?
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Answer 1

Plaster of Paris is formed by heating the mineral gypsum. When Gypsum is heated to about 150 degree celcius it loses water and produce powder plaster of paris.

Answer 2

Answer:

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Explanation:

↪ Plaster of Paris is manufactured by heating gypsum at 423K or 150o C/300o F. On heating gypsum at 423 K, it loses water molecules and becomes calcium sulfate hemihydrate. This product is known as the plaster of Paris. However, when water is mixed with dry plaster of Paris, it re-structures into gypsum.

Calcium sulfate hemihydrate Plaster of paris (CaSO4)2.H2O or Ca2H2O9S2