What is meant by water of crystallisation?
Answer and explanation
Correct answer: Fixed amount of water in salt crystals
Water of crystallisation is the definite number of water molecules chemically associated with one formula unit of certain crystalline salts. It is part of the crystal structure, not merely water absorbed on the surface. For example, CuSO₄·5H₂O contains five such water molecules per formula unit. Hence option A gives the correct definition.
Frequently asked questions
What is the correct answer to this question?
Fixed amount of water in salt crystals
Why is this the correct answer?
Water of crystallisation is the definite number of water molecules chemically associated with one formula unit of certain crystalline salts. It is part of the crystal structure, not merely water absorbed on the surface. For example, CuSO₄·5H₂O contains five such water molecules per formula unit. Hence option A gives the correct definition.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
