Question

$\left[Co{\left(N{H}_3\right)}_{5}S{O}_4\right]Br$ and $\left[Co{\left(N{H}_3\right)}_{5}Br\right]S{O}_4$ are a pair of _______ isomers.

• A. ionisation
• B. ligand
• C. coordination
• D. hydrate

Answer 1

The correct option is A ionisation

$\left[Co{\left(N{H}_3\right)}_{5}S{O}_4\right]Br\rightleftharpoons {\left[Co{\left(N{H}_3\right)}_{5}S{O}_4\right]}^{+}+{Br}^{-}$
$\left[Co{\left(N{H}_3\right)}_{5}Br\right]S{O}_4\rightleftharpoons {\left[CO{\left(N{H}_3\right)}_{5}Br\right]}^{2+}+S{O}_4^{2-}$ the molecular formula of both of the above compounds is same but on ionisation they give different ions in solution, so they are called ionisation isomers.