Chemistry - Salt Analysis Question with Solution | TestHub

${\mathrm{Cl}}^{-}$forms precipitate with $\mathrm{Cu}$ (I), remove $\mathrm{Cu}$ (I) ion from equilibrium and reaction shift in backward direction according to Le-Chatelier's principle.

and ${\mathrm{CN}}^{-}\&{\mathrm{SCN}}^{-}$ form complexes with Cu(I) thereby removing it to shift reaction backwards