Question

Match the salts listed in List 1 with the color of the precipitate and reagent(s) listed in List 2

Answer 1

(a)$Fe(OH{)}_2\downarrow green$; $PbS{O}_4\downarrow white$; $FeS\downarrow black$.
(b)$B{i}_2{S}_3\downarrow black$
(c)$A{g}_{2}Obrown$, $A{g}_{2}S\left(black\right)$
(d)$\left(N{H}_4{)}_3\right[Co\left(N{O}_2{)}_6\right]\downarrow yellow$; $CoS\downarrow black$.