Question

How many water molecules present in $CuS{O}_4\cdot 5H_{2}O$ are hydrogen bonded?

• A. 5
• B. 1
• C. 4
• D. 2

Answer 1

Answer: (B)

The $CuS{O}_4\cdot 5H_{2}O$ contain five molecules as water of crystallisation by each $CuS{O}_4$ molecule. Out of $5H_{2}O$ molecules, $4H_{2}O$ molecules are bonded with the $CuS{O}_4$, (i.e. with $C{u}^{2+}$ ) through coordinate bonds while one of the $H_{2}O$ molecule is bonded through $H$- bond.