Question

Rahul found that the Plaster of Paris, which he stored in a container, has become very

hard and lost its binding nature. What is the reason for this? Also, write a chemical

equation to represent the reaction taking place.​

Answer 1

Answer:

Plaster of Paris should be stored in a moisture

Answer 2

Explanation:

When the POP whose chemical formulae is CaSO4. 1/2H2O, comes in contact of moisture, it absorbs the water molecules and gets converted into gypsum, which is a hardened material which do not have binding nature/properties.

The Chemical Reaction which is involved in this process is as follows -

CaSO4. 1/2H20 + 3/2H2O -> CaSO4. 2H20.