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The reagents, NH₄Cl and aqueous NH₃ will precipitate

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Important Questions on Inorganic Qualitative Analysis

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

The pair(s) of ions where BOTH the ions are precipitated upon passing

H_{2} S

gas in presence of dilute

HCl

, is (are)

MEDIUM

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Upon treatment with ammoniacal

H_{2} S

, the metal ion that precipitates as a sulphide is

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Which of the following ions does not liberate hydrogen gas on reaction with dilute acids?

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Copper sulphate solution reacts with

KCN

to give

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

The correct option(s) to distinguish nitrate salts of

{Mn}^{2 +} and {Cu}^{2 +}

taken separately is(are)

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

A colorless aqueous solution contains nitrates of two metals,

X

and

Y

. When it was added to an aqueous solution of

NaCl

, a white precipitate was formed. This precipitate was found to be partly soluble in hot water to give a residue

P

and a solution

Q

. The residue

P

was soluble in aq.

{NH}_{3}

and also in excess sodium thiosulfate. The hot solution

Q

gave a yellow precipitate with

KI

. The metals

X

and

Y

, respectively, are

HARD

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

A solution containing a group

- IV

cation gives a precipitate on passing

H_{2} S .

A solution of this precipitate in dil.

HCl

produces a white precipitate with

NaOH

solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

To an aqueous solution containing ions such as

{Al}^{3 +}, {Zn}^{2 +}, {Ca}^{2 +}, {Fe}^{3 +}, {Ni}^{2 +}, {Ba}^{2 +}

and

{Cu}^{2 +}

was added

conc . HCl

, followed by

H_{2} S

. The total number of cations precipitated during this reaction is/are :

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

An aqueous solution of a salt X turns blood red on treatment with

S C N^{-}

and blue on treatment with

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

, X also gives a positive chromyl chloride test. The salt X is:

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

The cation that will not be precipitated by

H_{2} S

in the presence of dil HCl is:

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

When

H_{2} S

gas is passed into a mixture of

{Mn}^{2 +}, {Ni}^{2 +}, {Cu}^{2 +}

and

{Hg}^{2 +}

ion in an acidified aqueous solution, the precipitates formed are

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Which one of the following compounds is not a yellow colored compound ?

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Which of the following compounds, on reaction with

NaOH

and

{Na}_{2} O_{2}

gives yellow colour?

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

For the following Assertion and Reason, the correct option is

Assertion (A) : When $Cu$ (II) and sulphide ions are mixed, they react together extremely quickly to give a solid.

Reason (R) : The equilibrium constant of ${Cu}^{2 +} (aq) + S^{2 -} (aq) ⇌ CuS (s)$ is high because the solubility product is low.

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

{PbO}_{2}

is obtained from

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Consider the sulphides

HgS, PbS, CuS, {Sb}_{2} S_{3}, {As}_{2} S_{3}

and

CdS .

Number of these sulphides soluble in

50 % {HNO}_{3}

is ___________ .

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is:

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

The incorrect statement is:

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

In the following reaction sequence in aqueous solution, the species

X, Y

and

Z

respectively, are

Question Image

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Aluminium(III) Ion

A solution of

{CrO}_{5}

in amyl alcohol has a....colour

The reagents, NH4Cl and aqueous NH3 will precipitate

Important Questions on Inorganic Qualitative Analysis

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The reagents, NH₄Cl and aqueous NH₃ will precipitate