- A yellow precipitate of the compound A is formed on passing H2S through a neutral solution of the salt B.
- The compound A is soluble in hot dilute HNO3 but insoluble in yellow ammonium sulphide.
- The solution of B, on treatment with a small quantity of NH3 , gives a white precipitate soluble in an excess of the reagent, forming a compound C.
- The solution of B gives a white precipitate with a small concentration of KCN. The precipitate is soluble in an excess of the reagent, forming a compound D.
- The solution of D, on treatment with H2S , gives A.
- The solution of B in dilute HCl , on treatment with a solution of BaCl2 , gives a white precipitate of the compound E, which is almost insoluble in concentrated HNO3 .
- Which of the following anions is present in B ?
a. SO42−
b. CO32−
c. SO32−
d. S2−