. Write the chemical names and formulae of the plaster of Paris and gypsum


Best Answer

The chemical name of plaster of Paris is Calcium sulphate hemihydrate.

The chemical formula of Plaster of Paris = CaSO4.1/2H2O

Benefits of Plaster of Paris:

1. It's light in weight and further durable.

2. It has low thermal conductivity.

3. It's really good fire resistant and hence a really good heat- separating material.

4. It isn't likely to bring cracking of surfaces.

5. It has no appreciable chemical action on paint and doesn't affect an alkali attack.

Chemical name of plaster of Paris is calcium sulphate dihydrate. Gypsum is a crystalline mineral of hydrated calcium sulphate (chemical formula CaSO4.2H2O).

gypsum is mostly used in the partly dehydrated form of plaster of Paris (2CaSO4.H2O) to make casts of objects or works of art in sculpture (moulds).

When we mix plaster of paris with water, crystals of gypsum is produced and set into a hard mass, which has a vast number of applications.

CaSO4.1/2H2O+3/2H2O→CaSO2.2H2O

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