Surface Chemistry - Result Question 6
####6. The number of water molecule(s) not coordinated to copper ion directly in $CuSO _4 \cdot 5 H _2 O$, is
(2019 Main, 9 April I)
(a) 2
(b) 3
(c) 1
(d) 4
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Answer:
Correct Answer: 6. (c)
Solution:
- In $CuSO _4 \cdot 5 H _2 O$, one molecule of water is indirectly connected to $Cu$. In this molecule, four water molecules form coordinate bond with $Cu^{2+}$ ion while one water molecule is associated with H-bond with $SO _4^{2-}$.
Structure of $CuSO _4 \cdot 5 H _2 O$
$\left[Cu\left(H _2 O\right) _4\right] SO _4 \cdot H _2 O$
