Question

Answer the following questions with reference to the following salt solution (5)
Iron sulphate, Iron (III) chloride, Lead nitrate, Zinc chloride, Sodium sulphate, Iron sulphate,
Magnesium sulphate
1. Which two solutions will give a white precipitate when dilute hydrochloric acid is added to it?
2. Which two salts solutions will give a white precipitate when treated with dilute nitric acid
followed by silver nitrate solution?
3. Which solution will give a white precipitate when dilute sulphuric acid is added to it?
4. Which solution gives a white precipitate with barium chloride?
5. Which salt solution will give a dirty green precipitate with sodium hydroxide?​

Answer 1

1) Lead Nitrate and Magnesium sulphate will give white precipitate when treated with dilute hydrochloric acid followed by Barium chloride solution.23.

2)Iron (II) sulphate and Magnesium sulphate give a white precipitate when treated with dilute Nitric acid followed by silver nitrate solution.

3)According to the solubility rule for sulphates, lead sulphate is not soluble in water and thus, lead sulphate precipitates out. Thus, dilute sulphuric acid produces white precipitate when added to the solution of lead nitrate.

4)When barium chloride reacts with zinc sulphate, it results in the formation of a white precipitate known as barium sulphate.

5)Ferrous sulphate gives a dirty green precipitate of Fe(OH2) with an excess of sodium hydroxide.