Question
Chemistry Question on GROUP 1 ELEMENTS
The chemical formula of plaster of Paris is
A
CaSO4.21H2O
B
CaSO4.H2O
C
CaSO4.2H2O
D
CaSO4.3H2O
Answer
CaSO4.21H2O
Explanation
Solution
Plaster of Paris CaSO4⋅21H2O
Gypsum CaSO4⋅2H2O
The chemical formula of plaster of Paris is
CaSO4.21H2O
CaSO4.H2O
CaSO4.2H2O
CaSO4.3H2O
CaSO4.21H2O
Plaster of Paris CaSO4⋅21H2O
Gypsum CaSO4⋅2H2O