How would you distinguish between $Z n^{2 +}$ and $P b^{2 +}$ using ammonium hydroxide solution?

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$Z n^{2 +}$ $P b^{2 +}$
On adding $N H_{4} O H$ drop by drop to a solution of Zinc salt a white precipitate is formed which is soluble in excess of $N H_{4} O H$ . On adding $N H_{4} O H$ drop by drop to a solution of lead salt a white precipitate is formed which is insoluble in excess of $N H_{4} O H$ .

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

Z n^{2 +}

P b^{2 +}

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$Z n^{2 +}$	$P b^{2 +}$
On adding $N H_{4} O H$ drop by drop to a solution of Zinc salt a white precipitate is formed which is soluble in excess of $N H_{4} O H$ .	On adding $N H_{4} O H$ drop by drop to a solution of lead salt a white precipitate is formed which is insoluble in excess of $N H_{4} O H$ .