Question

One mole of the complex compound Co(NH₃)₅Cl₃, gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO₃ solution to yield two moles of AgCl (s). The structure of the complex is ______.

पर्याय

• [Co(NH₃)₅Cl]Cl₂

• [Co(NH₃)₃Cl₃].2NH₃

• [Co(NH₃)₄Cl₂]Cl.NH₃

• [Co(NH₃)₄Cl]Cl₂.NH₃

Answer 1

One mole of the complex compound Co(NH₃)₅Cl₃, gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO₃ solution to yield two moles of AgCl (s). The structure of the complex is `bbunderline([Co(NH_3)_5Cl]Cl_2)`.

Explanation:

\[\ce{\underset{1 mole}{[CO(NH3)5Cl]Cl2} ⇌ \underset{3 moles of ions in water}{[Co(NH3)5Cl]^{2+}} + 2Cl^{-}}\]

\[\ce{\underset{2 moles}{2AgNO3} + \underset{1 moles}{[Co(NH3)5Cl]Cl2} -> [Co(NH3)5Cl](NO3)2 + \underset{2 moles}{2AgCl(s)}}\]

1 mole of Co(NH₃)₅Cl₃ dissociates into 3 ions (Co³⁺ and 3 Cl⁻).

The complex reacts with 2 moles of AgNO₃ to form 2 moles of AgCl, indicating that 2 chloride ions are ligands in the coordination sphere, while the third chloride is a counterion.

Thus, giving the structure [Co(NH₃)₅Cl]Cl₂.