Question

Which of the following complexes will give a white precipitate on treatment with a solution of barium nitrate?

1. [Cr(NH₃)₄SO₄] Cl
2. [Co(NH₃)₄Cl₂] NO₂
3. [Cr(NH₃)₄Cl₂]SO₄
4. [CrCl₂(H₂O)₄]Cl

Answer 1

(c) [Cr(NH₃)₄Cl₂]SO₄
[Cr(NH₃)₄Cl₂]SO₄ complex will give a white precipitate on treatment with a solution of barium nitrate. The white precipitate is of barium sulphate (BaSO₄).