Question

Which of the following complex will give a white precipitate with barium chloride solution?

Options

• [Cr(NH₃)₅Cl]SO₄

• [Cr(NH₃)₅SO₄]Cl

• Both ([Cr(NH₃)₅Cl]SO₄) and ([Cr(NH₃)₅SO₄]Cl)

• [Cr(NH₃)₄Cl₂]NO₂

Answer 1

[Cr(NH₃)₅Cl]SO₄

Explanation:

White coloured BaSO​​​₄ is precipitated on the reaction of the given complex with Barium chloride since \[\ce{SO^{2-}_4}\] ion is present outside the coordination sphere and is available for reaction with Ba​​​​​​​​²⁺ ion.