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How many hydrogen-bonded water molecule(...

How many hydrogen-bonded water molecule(s) are associated in `CuSO_(4).5H_(2)O`?

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
A
Hydrated copper sulphate or `CuSO_4. 5H_2O` is blue in colour and this colour is attributed to the presence of hydrated Cu(II) ion, i.e. `[Cu(H_2O)_4]^(2+)`. The numbers of water molecules directly attached to `Cu^(2+)` or present within the co-ordination sphere are 4 and one `H_2O` is present outside the coordination sphere.
`:. CuSO_4 . 5H_2O` can be written as
`[Cu(H_2O)_4]SO_4 H_2O`.
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