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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.

Related tags

Water Of CrystallisationSaltsHydrated CrystalsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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