Plaster of Paris () is manufactured by the controlled heating of Gypsum (). What is the strict tempe — s Block Elements Chemistry Question

💡 Solution & Explanation

Gypsum must be heated carefully to exactly $393\text{ K}$ ($120^\circ\text{C}$). The reaction is $2(CaSO_4 \cdot 2H_2O) \xrightarrow{393 K} 2(CaSO_4) \cdot H_2O + 3H_2O$. If heated above this temperature, it loses all water and becomes dead burnt plaster.