General Science • ChemistryEasy
What is the common name of calcium sulfate hemihydrate, widely used in hospitals for setting fractured bones?
A. Plaster of Paris✓ Correct Answer
B. Quicklime
C. Slaked lime
D. Gypsum
💡 Solution & Explanation
Plaster of Paris is calcium sulfate hemihydrate, prepared by heating gypsum to 373 Kelvin, causing it to lose water molecules. Quicklime refers to calcium oxide, whereas slaked lime is calcium hydroxide. Gypsum itself is calcium sulfate dihydrate and hardens back into gypsum when mixed with water.
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