A compound which is prepared from gypsum has the property of hardening when water is mixed in right quantity with it: 3 (i) Write common name and the chemical name of this compound. (ii) Give chemical equation for its preparation. (iii) List its two uses.
Explanation
The common name of the compound is Plaster of Paris, and its chemical name is Calcium sulphate hemihydrate. The chemical equation for its preparation is: CaSO4·2H2O → CaSO4·½H2O + 1½H2O. Its two uses are as a building material and in medical applications.
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