Question

A substance on reaction with $NaOH$ and $N{H}_{4}OH$ gives a gelatinous white precipitate which is soluble in excess of both. Guess the cation.

• A. $Z{n}^{2+}$
• B. $P{b}^{2+}$
• C. $C{a}^{2+}$
• D. $C{u}^{2+}$

Answer 1

The correct option is B $P{b}^{2+}$

Lead ions on reaction with $NaOH$ and $N{H}_{4}OH$ gives a gelatinous precipitate $Pb(OH{)}_2$ which is soluble in excess of both.