Question

Write the chemical name and chemical formula of plaster of paris how is prepared write chemical equation for the process

Answer 1

Chemical formula - 2CaSO4.H20
Chemical name - Calcium sulphate hemihydrate.
Preparation -
POP is prepared from gypsum.

CaSO4.2H2O(gypsum) →Heat to 100°c
CaSO4.1/2H2O(POP) + 1 1/2 H2O(water)
Multiply by 2 for balancing equn.
2( CaSO4.2H2O)( gypsum) → 2CaSO4.H2O( POP) + 3H20(water)
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Answer 2

chemical name is calcium sulphate hemidrate

formula is CaSO4. 1/2 H2O

it is prepared when gypsum is heated at 373K

CaSO4.1/ 2H2O +1 whole 1/ 2 = caso4.2H2O

It is a white powder help to set the fracture bone