When lead nitrate reacts with ammonium hydroxide, a chalky white precipitate is formed. The precipitate formed is insoluble in excess of ammonium hydroxide. Name this precipitate.

Q. A salt gave following tests as,
1.Visual test: white crystalline powder
2.Heat test: brown gas given off.
3.Flame test: no color identified
4.Solubility in water: soluble.
5.Nitric acid: soluble
6.Hydroxide: formed an insoluble white precipitate, then dissolved with excess NaOH
7.Ammonia: formed an insoluble white precipitate which did not redissolve in excess ammonia.
8.Hydrochloric acid: formed an insoluble white precipitate
Salt may be :

Q. Identify the inorganic salt

A

whose aqueous solution gives following reactions.
(i) pale yellow precipitate with

A g N O_{3}

solution, insoluble in dil

H N O_{3}

(ii) white precipitate with

N H_{4} O H

and also with

N a O H

solution. However the precipitate does not dissolve in excess of

N H_{4} O H

but soluble in excess of

N a O H

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Complete the given table when Pb(NO3)2 reacts with NaOH and NH4OH. For Pb(NO3)2NaOHNH4OHColourChalky white precipitateXSolubilityPrecipitate formed will be solubleYin excess NaOH

Complete the given table when $P b (N O_{3})_{2}$ reacts with $N a O H$ and $N H_{4} O H$ .

$\begin{matrix} For P b (N O_{3})_{2} & NaOH & N H_{4} O H Colour & Chalky white precipitate & X Solubility & Precipitate formed will be soluble & Y in excess NaOH \end{matrix}$