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Standard X

Chemistry

Test for Sulphuric Acid

State what is...

Question

State what is observed when an excess of ammonia is passed through an aqueous solution of lead nitrate.

A white precipitate formed which is soluble in excess of ammonia.

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A white precipitate formed which is insoluble in excess of ammonia.

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A brown precipitate formed which is soluble in excess of ammonia.

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A brown precipitate formed which is insoluble in excess of ammonia.

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Solution

The correct option is B
A white precipitate formed which is insoluble in excess of ammonia.

When an excess of ammonia is passed through an aqueous solution of lead nitrate, a white precipitate is formed which is insoluble in excess of ammonia.
$P b (N O_{3})_{2} + 2 N H_{4} O H \to 2 N H_{4} N O_{3} + P b (O H)_{2} ↓$

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Similar questions

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 :

Z n S O_{4}

and

P b (N O_{3})_{2}

Z n^{2 +}

and

P b^{2 +}

when both are treated with

N a O H

and

N H_{4} O H

Q. 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}

Q. Complete the given table when

F e S O_{4}

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 & Dirty green precipitate & X Solubility & Y & Precipitate formed will be insoluble in excess N a O H \end{matrix}

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.

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State what is observed when an excess of ammonia is passed through an aqueous solution of lead nitrate.

The correct option is B A white precipitate formed which is insoluble in excess of ammonia.When an excess of ammonia is passed through an aqueous solution of lead nitrate, a white precipitate is formed which is insoluble in excess of ammonia. Pb(NO3)2 + 2NH4OH→2NH4NO3 + Pb(OH)2↓