Question

Write the chemical equation of its preparation.

Hint:

Heating gypsum produces Plaster of Paris.

Answer 1

Plaster of Paris is prepared by heating gypsum. \[ \text{CaSO}_4 \cdot 2H_2O \xrightarrow{100-120^\circ C} \text{CaSO}_4 \cdot \frac{1}{2}H_2O + \frac{3}{2}H_2O \]