Identify the compound of calcium which is used for plastering or fracturing bone with the help of chemical equation show how is it prepared and what special precautions should be taken during the preparation of this compound
Answers
plaster of paris ==> CaSO4 . 1/2 H2O
calcium sulphate hemihydrate
plaster of paris is prepared by heating gypsum to a temperature of 373K or 100C
CaSO4 . 2 H2O--------------> CaSO4 . 1/2 H2O + 1 1/2 H2O
Precautions:
Cold water should be made available to wash off the plaster.
Protect the eyes by wearing goggles.
Cover the face and hands using dust masks and gloves.
Casting of faces and body parts should be avoided.
Wet plaster must be handled properly
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**********HI KIDDO************
You asked a very good question.
Normally, we use calcium sulphate (CuSO4 1/2 H2O). This is commonly known as plaster of Paris.
It is prepared by heating a substance called gypsum at 398 K
Eqn:
2CaSO4.2H2O ------->(CaSO4)2.H2O + 3H2O
The main precaution that we should know while the perpetration is that the reaction is highly exothermic . So you should do it by using gloves other wise it could burn or hands.
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