What is meant by "water of crystallisation" in a substance? Explain with an example.
(b) How would you show that blue copper sulphate crystals contain water of crystallisation?
(c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

Question

What is meant by "water of crystallisation" in a substance? Explain with an example.
(b)	How would you show that blue copper sulphate crystals contain water of crystallisation?
(c)	Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

MyClass24 · Accepted Answer

Water of crystallisation is that the water molecules that form part of the structure of a crystal of a For example the washing soda crystals contains 10 molecules of water of crystallisation and represented as Na2CO3.10H2O
Copper sulphate crystals are blue in colour CuSO4.5H2O and when is heated it loses water and will become white in colour. Thus we can conclude that the blue colour is due to water of crystallization
Take a drop of the liquid which to be tested and add to white anhydrous copper sulphate The blue colour indicates the presence of moisture or water

What is meant by "water of crystallisation" in a substance? Explain with an example. (b) How would you show that blue copper sulphate crystals contain water of crystallisation? (c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.