What does water of crystallisation mean?
Answer and explanation
Correct answer: A fixed amount of water present in a salt crystal
Water of crystallisation is the definite number of water molecules chemically associated with the formula unit of certain crystalline salts. It is not merely moisture on the outside. For example, CuSO₄·5H₂O contains five water molecules per formula unit. This water can influence crystal colour, shape, and stability, so option A gives the correct meaning.
Frequently asked questions
What is the correct answer to this question?
A fixed amount of water present in a salt crystal
Why is this the correct answer?
Water of crystallisation is the definite number of water molecules chemically associated with the formula unit of certain crystalline salts. It is not merely moisture on the outside. For example, CuSO₄·5H₂O contains five water molecules per formula unit. This water can influence crystal colour, shape, and stability, so option A gives the correct meaning.
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.
