Question

How would you distinguish between Zn²⁺ and Pb²⁺ using ammonium hydroxide solution?

• A. On adding ammonium hydroxide, a white precipitate soluble in excess of ammonium hydroxide indicates Zn²⁺ and a white precipitate insoluble in excess of ammonium hydroxide indicates Pb²⁺
• B. On adding ammonium hydroxide, a white precipitate soluble in excess of ammonium hydroxide indicates Pb²⁺ and a white precipitate insoluble in excess of ammonium hydroxide indicates Zn²⁺
• C. On adding ammonium hydroxide, a white precipitate soluble in excess of ammonium hydroxide indicates Pb²⁺ and no precipitate in ammonium hydroxide indicates Zn²⁺
• D. On adding ammonium hydroxide, a white precipitate soluble in excess of ammonium hydroxide indicates Zn²⁺ and no precipitate in ammonium hydroxide indicates Pb²⁺

Answer 1

The correct option is A

On adding ammonium hydroxide, a white precipitate soluble in excess of ammonium hydroxide indicates Zn²⁺ and a white precipitate insoluble in excess of ammonium hydroxide indicates Pb²⁺

On adding ammonium hydroxide, a white precipitate soluble in excess of ammonium hydroxide indicates Zn²⁺ and a white precipitate insoluble in excess of ammonium hydroxide indicates Pb²⁺