Question:
In CuSO\(_4\cdot 5H_2O\), the number of coordinated and hydrogen bonded water molecules present are respectively:
In CuSO\(_4\cdot 5H_2O\), the number of coordinated and hydrogen bonded water molecules present are respectively:
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In metal hydrates, coordinated water molecules are directly bonded to the metal ion, while lattice water is hydrogen bonded.
Updated On: Jun 19, 2026
- 5, 0
- 4, 1
- 3, 2
- 1, 4
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the compound.
CuSO\(_4\cdot 5H_2O\) is known as copper(II) sulfate pentahydrate. It contains 5 water molecules per formula unit.
Step 2: Coordination concept.
Out of the 5 water molecules, 4 are directly bonded (coordinated) to the copper(II) ion forming the complex [Cu(H\(_2\)O)\(_4\)]\(^{2+}\).
Step 3: Hydrogen bonding.
The remaining 1 water molecule is not directly bonded to Cu\(^{2+}\) and exists as a lattice water molecule, hydrogen bonded in the crystal structure.
Step 4: Conclusion.
Hence, the number of coordinated and hydrogen bonded water molecules are 4 and 1, respectively.
CuSO\(_4\cdot 5H_2O\) is known as copper(II) sulfate pentahydrate. It contains 5 water molecules per formula unit.
Step 2: Coordination concept.
Out of the 5 water molecules, 4 are directly bonded (coordinated) to the copper(II) ion forming the complex [Cu(H\(_2\)O)\(_4\)]\(^{2+}\).
Step 3: Hydrogen bonding.
The remaining 1 water molecule is not directly bonded to Cu\(^{2+}\) and exists as a lattice water molecule, hydrogen bonded in the crystal structure.
Step 4: Conclusion.
Hence, the number of coordinated and hydrogen bonded water molecules are 4 and 1, respectively.
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