Question

Assertion: $CuS{O}_4.5H_{2}O$ has one hydrogen-bonded molecule of water.
Reason: The four molecules of water are coordinated in $CuS{O}_4.5H_{2}O$.

• A. If both assertion and reason are true and reason is the correct explanation of assertion .
• B. If both assertion and reason are true but reason is not the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.

Answer 1

Answer: (A)

There is 5 crystal water present in $5H_{2}O$. There are five water molecule present in the crystal framework of the molecule among which 4 water molecules are attached to $C{u}^{+2}$ and 1 hydrogen-bonded molecule is attached to $S{O}_4^2$
${\left[Cu{\left(H_{2}O\right)}_4\right]}^{2+}S{O}_4^{2-}\cdot H_{2}O.$