A solid Silver Group (Anion) unknowon that contains only sodium ion as a catio is acidified and divided into tow portions, to both of which 6 M HC2H3O2 and chlorine water are added. On treatment with chloroform, one portion developeds a violet color in the chloroform layer. Both layers of the other portion remain colorless. An aqueous solution of the original solid is acidified with HNO3(aq); AgNO3(aq) is added, and a precipetate that soluble in NH3 (aq) forms. Which anion(s) are present ans which are absent? EXPLAIN.