Question

What is the water of crystallization for following compound? (CaSO4)2 .H2O

2

1/2

-1

+1​

Answer 1

2

Explanation:

Water of crystallization in any crystalline compound is that water that gets crystallized along with the compound. These molecules get evaporated on heating.

Here in the formula, "2" that is written on the left side of the decimal is actually on the right side with the water molecules because there are "2" molecules of water of crystallization in gypsum e.g. CaSO4 . 2H2O

Learn more about water of crystallization from the link below

https://brainly.in/question/124650

Answer 2

The water of crystallization for the following compound is 1/2.

- The given compound is actually Plaster of Paris, i.e., Calcium Sulphate Hemihydrate.

- Its chemical formula is CaSO4. 1/2 H2O

- But it can also be written as given in the question, i.e., (CaSO4)2 .H2O

- According to the formula, it contains 1/2 molecule of water as water of crystallization.

- So the correct answer is 1/2.