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Byju's Answer

Standard XII

Chemistry

Central Atom and Ligands

The aqueous s...

Question

The aqueous solution of an inorganic compound (X) gives white precipitate with $N H_{4} O H$ which does not dissolve in excess of $N H_{4} O H$ .

This aqueous solution also gives white precipitate with $A g N O_{3}$ and the precipitate is soluble in dilute $H N O_{3}$ . Here, (X) is :

A l C l_{3}

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A l B r_{3}

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A l N

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A l_{2} (S O_{4})_{3}

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Solution

The correct option is A $A l C l_{3}$
The aqueous solution of an inorganic compound (X) gives white precipitate with $N H_{4} O H$ which does not dissolve in excess of $N H_{4} O H$ .

$A l C l_{3} + 3 N H_{4} O H \to 3 N H_{4} C l + A l (O H)_{3}$
This aqueous solution also gives white precipitate with $A g N O_{3}$ and the precipitate is soluble in dilute $H N O_{3}$ .
$A l C l_{3} + 3 A g N O_{3} \to 3 A g C l + A l (N O_{3})_{3}$
Here, (X) $A l C l_{3}$

Hence option A is correct.

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Similar questions

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

Q. A black coloured compound

(A)

on reaction with dilute

H_{2} S O_{4}

gives a gas

(B)

which on passing in a solution of an acid

(C)

gives a white turbidity

(D)

. Gas

(B)

when passed in an acidified solution of a compound

(E)

gives a precipitate

(F)

soluble in dil.

H N O_{3}

. After boiling this solution when an excess of

N H_{4} O H

is added, a blue coloured compound

(G)

is formed. To this solution on addition of acetic acid and aqueous

K_{4} [F e (C N)_{6}]

a chocolate precipitate

(H)

is obtained. On addition of an aqueous soluion of

B a C l_{2}

to an aqueous solution of

(E)

, a white precipitate insoluble in

H N O_{3}

is obtained. Identify

(G)

and

(H)

Q. The aqueous solution of inorganic compound

(X)

yielded a white precipitate when treated with dilute

H N O_{3}

and

A g N O_{3}

. Another sample of the solution of

(X)

when treated with

N a O H

gave a white precipitate first which dissolved in excess of

N a O H

yielding a colorless solution. When

H_{2} S

gas was passed through that solution a white precipitate was obtained.

Identify the compound

(X)

and give the reactions.

Q. An inorganic compound

A

shows the following reaction:
(i) It is white solid, exists as dimer and fumes in the wet air.
(ii)It sublimes at

180^{\circ} C

and forms monomer if heated to

400^{\circ} C

.
(iii) Its aqueous solution turns blue litmus to red and gives a white precipitate with

A g N O_{3}

solution, which is soluble in

N H_{4} O H

.
Addition of

N H_{4} O H

and NaOH separately to the solution of

A

gives a gelatinous precipitate which in however soluble in excess of

N a O H

.
The compound

A

is:

An aqueous solution of an inorganic compound (X) gives the following reactions.

(i) With an aqueous solution of

B a C l_{2}

, a precipitate insoluble in dilute

H C l

is obtained.

(ii) Addition of excess of

K I

gives a brown precipitate which turns white on addition of excess hypo solution.

(iii) With an aqueous solution of potassium ferrocyanide a chocolate colored ppt. is obtained.

Identify X :

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The aqueous solution of an inorganic compound (X) gives white precipitate with NH4OH which does not dissolve in excess of NH4OH. This aqueous solution also gives white precipitate with AgNO3 and the precipitate is soluble in dilute HNO3. Here, (X) is :

The aqueous solution of an inorganic compound (X) gives white precipitate with $N H_{4} O H$ which does not dissolve in excess of $N H_{4} O H$ .

This aqueous solution also gives white precipitate with $A g N O_{3}$ and the precipitate is soluble in dilute $H N O_{3}$ . Here, (X) is :