Question

Haw the Plaster of Pairs . is abtained
fram gypsum​

Answer 1

Answer:

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Plaster of Paris is obtained by heating gypsum or calcium sulphate dihydrate to about 140-180 degree Celsius. When heated to such a temperature, gypsum forms Plaster of Paris. The name is derived from the large deposits of gypsum in the Montmartre hill in Paris.

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Answer 2

Explanation:

Plaster of Paris is calcium sulphate hemihydrate (CaSO4. 1/2H2O).

Gypsum, when heated at a temperature of about 380 K in a kiln, loses its three-fourth water of crystallisation and changes to plaster of Paris.