In the structural formulation of Plaster of Paris, exactly one molecule of water () is shared betwee — s Block Elements Chemistry Question

💡 Solution & Explanation

Plaster of Paris is a hemihydrate, chemically written as $CaSO_4 \cdot \frac{1}{2}H_2O$. This means that structurally, two formula units of $CaSO_4$ share one molecule of water, which is why it is often written as $2(CaSO_4) \cdot H_2O$.