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Question

How many hydrogen bonded water molecule (s) are associated with CuSO4.5H2O ?

A
4
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B
2
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C
1
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D
3
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Solution

The correct option is C 1
In CuSO4.5H2O, Cu is coordinated with 4 water molecules and two more oxygen atoms from Sulphate ion.
Now fifth water molecule is hydrogen-bonded and is deeply embedded in a crystal. It is not coordinated.
Only 4 water molecules are coordinated and the fifth is the only hydrogen bonded.

Hence, option A is correct

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