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The number of hydrogen bonded water molecules(s) associated with CuSO4·5H2O is

1. 5
2. 3
3. 1
4. 2

Correct answer: 3

Solution

In CuSO4·5H2O, two water molecules are coordinated to the Cu²⁺ ion, and the remaining three water molecules are hydrogen-bonded to the sulfate ion.

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