|Precipitate: AgCl or Hg2Cl2
Pour 5 mL of concentrated NH4OH over the filter paper.
(see reaction #6)
A black precipitate confirms the presence of Hg22+
(see reaction #8)
May contain the Ag(NH3)2Cl complex.
Acidify with dilute HNO3. Test with litmus to confirm
A white precipitate of AgCl confirmed the presence of the Ag+1
ion. (see reaction #7)
Acidify with 2 mL of acetic acid. Add 5 mL of K2CrO4.
A yellow precipitate confirms the presence of Pb2+. (see