What is the correct meaning of water of crystallisation?
Answer and explanation
Correct answer: Water present in a fixed ratio in salt crystals
The governing concept is the definite crystal structure of hydrated salts. Some salts incorporate a fixed number of water molecules into their crystal lattice; this chemically associated water is called water of crystallisation. For example, CuSO₄·5H₂O contains five water molecules per formula unit. Therefore option A is correct. Surface moisture, water in every acid, and dissolved gas are not water of crystallisation.
Frequently asked questions
What is the correct answer to this question?
Water present in a fixed ratio in salt crystals
Why is this the correct answer?
The governing concept is the definite crystal structure of hydrated salts. Some salts incorporate a fixed number of water molecules into their crystal lattice; this chemically associated water is called water of crystallisation. For example, CuSO₄·5H₂O contains five water molecules per formula unit. Therefore option A is correct. Surface moisture, water in every acid, and dissolved gas are not water of crystallisation.
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.
