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Question: 8. The secondary valency and the number of hydrogen bonded water molecule(s) in $CuSO_4 \cdot 5H_2O$...

  1. The secondary valency and the number of hydrogen bonded water molecule(s) in CuSO4⋅5H2OCuSO_4 \cdot 5H_2O, respectively are [18 March, 2021 (Shift-II)]
A

6 and 4

B

4 and 1

C

5 and 1

D

6 and 5

Answer

Option (b) Secondary valency = 4 and number of hydrogen bonded water molecules = 1.

Explanation

Solution

In CuSO₄·5H₂O, four water molecules are coordinated (bonded) to the Cu²⁺ ion (making its secondary valency 4) and the fifth water molecule is present as a crystallization (hydrogen bonded) water.