How many water molecules are hydrogen bonded in following molecular formula…
How many water molecules are hydrogen bonded in following molecular formula $\left[\mathrm{Cu}\left(\mathrm{H}_{2} 0\right)_{4}\right]^{2+} \mathrm{SO}_{4}{ }^{2-} \cdot \mathrm{H}_{2} \mathrm{O} ?$
4
3
1
5
Solution
Four water molecules are coordinated with $\mathrm{Cu}^{2+}$ and one is hydrogen bonded with $\mathrm{SO}_{4}^{2-}$.