Question

Total number of anion(s) which give white precipitate with aqueous solution of $AgNO_{3}$ is/are:
$S^{2 -},HSO_{3}^{\Theta},SO_{3}^{2 -},S_{2}O_{3}^{2 -},CH_{3}COO^{\ominus},Cl^{\ominus},I^{\ominus},BO_{3}^{3 -}$

Answer 1

1. $2 AgNO _{3}+ S ^{2-} \rightarrow Ag _{2} S$ (Black) $+2 NO _{3}^{-}$
2. $2 AgNO _{3}+ S _{2} O _{3}^{2-} \rightarrow Ag _{2}\left( S _{2} O _{3}\right)$ (White) $+2 NO _{3}^{-}$
3. $AgNO _{3}+ CH _{3} COO ^{-} \rightarrow CH _{3} COOAg ($ White $)+ NO _{3}^{-}$
4. $AgNO _{3}+ Cl ^{-} \rightarrow AgCl ($ White $)+ NO _{3}^{-}$
5. $AgNO _{3}+1^{-} \rightarrow Agl \left(\right.$ Yellow) $+ NO _{3}^{-}$