Question

Write the chemical formula of plaster of Paris in two ways

Answer 1

Answer:

(CaSO4)2.H2O.

Explanation:

The name plaster of Paris came from the fact that it was first of all made by heating gypsum which was mainly found in Paris. The compound plaster of paris is prepared by heating gypsum at 120oC.  

2CaSO4.2H2O → (CaSO4)2.H2O + 3H2O