The chemical formula of gypsum is ______.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. CaSO4 .2H2O.
The chemical name of gypsum is calcium sulfate dihydrate. The chemical formula is CaSO4. 2H2O.
Preparation of Gypsum-
- Gypsum is made up of the ions of calcium and sulphate with water molecules bound to it. It is typically found in white.
- It is made when calcium hydroxide or calcium carbonate reacts with weak sulfuric acid.
- Gypsum is made through the following chemical reactions:
CaCO3 (s) + H2 SO4 (aq) CaSO4 (s) + CO2 (g) + H2 O (l)
We can now see that calcium sulphate is created when water molecules are combined, and that this calcium sulphate dihydrate is created as a result. As a result, we can write the chemical formula for gypsum, which is CaSO4.2H2O, also known as calcium sulphate dihydrate.
Additional Information-
- To make plaster of Paris, gypsum is employed as a reactant. In addition to being a drying agent, it is employed in the production of cement.
- It makes up the majority of blackboard chalk
- It is also used to make a variety of substances, including bleaching powder, calcium nitrate, and ammonia.