Write the chemical name and formula of the calcium compound used for blasting of fractured bone write about the preparation of this one, that of chemical equation what special precautions should be taken during the preparation of this compound
Answers
Write the chemical name and formula of the calcium compound used for blasting of fractured bone
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Chemical name : Calcium Sulphate Hemihydrate
Formula : CaSO4 * 1/2 H20
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Write about the preparation of this one, that of chemical equation
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It is prepared by heating gypsum at 373 K. On heating, it loses water molecules and becomes calcium sulphate hemihydrate
CaSO4.2H2O→CaSO4.0.5H2O + 1.5H2O
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What special precautions should be taken during the preparation of this compound ?
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● 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.
Answer:
Chemical formula of Plaster of Paris.
CaSO₄. 1/2 H₂O
Preparation :
On heating Gypsum at 373 K Plaster of Paris is formed.
CaSO₄. 2 H₂O ⇒ CaSO₄. 1/2 H₂O + 3/2 H₂O
Special precaution :
We shouldn't heat gypsum above 373 K else it will not form.