Which of the following will produce a white precipitate upon reacting with `AgNO_(3)`?

Options

A. `K_(2)[Pt(e n)_(2)Cl_(2)]`
B. `[Co(NH_(3))_(3)Cl_(3)]`
C. `[Cr(H_(2)O)_(6)]Cl_(3)`
D. `[Fe(H_(2)O)_(3)Cl_(3)]`

Answer

C

Explanation

`AgNO_(3) + [Cr(H_(2)O)_(6)]Cl_(3) rarr AgCl`
ppt should be below `AgCl + NO_(3)^(-)`
Since Cl is outside the coordination sphere, it can react with `AgNO_(3)` forming the white AgCl precipitate.