Question

The number of ions formed when tetraamminecopper(II) sulphate is dissolved in water is____________.

• A. one
• B. four
• C. two
• D. zero

Answer 1

The correct option is C two

The number of ions formed when tetraamminecopper(II) sulphate is dissolved in water is two
$\left[Cu\right(N{H}_3{)}_4]S{O}_4\to [Cu(N{H}_3{)}_4{]}^{2+}+S{O}_4^{2-}$
$\left[Cu\right(N{H}_3{)}_4{]}^{2+}$ is a complex ion and retains its identity in aqueous solution.