Explain why Plaster of Paris should be stored in a moisture-proof container Give reasons

Answers

Question :

Explain why Plaster of Paris should be stored in a moisture-proof container. Give reasons.
Submitted on 28/8/2024 | Answered by Vandana Rana

Answer :

Plaster of Paris (POP) should be stored in a moisture-proof container because it is a powdery mass that can absorb water or moisture to form a hard solid mass known as gypsum. The reaction takes place as follows:

CaSO₄.½ H₂O + 1½ H₂O → CaSO₄.2H₂O