X → KOH Y (gas turns red litmus blue) + Z → Zn + KOH Y (gas) . X → Δ gas (does not support combustion) Identify (X) to (Z):

X = NH 4 NO 2 Y = NH 3 Z = KNO 2

X = ( NH 4 ) 2 Cr 2 O 7 Y = NH 3 Z = Cr 2 O 3

X = ( NH 4 ) 2 SO 4 Y = NH 3 Z = K 2 SO 4

X = NH 4 NO 3 Y = NH 3 Z = KNO 3

MEDIUM

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Sodium hydroxide cannot be used to identify :

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Important Questions on Inorganic Qualitative Analysis

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

Element not present in Nessler’s reagent is

EASY

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

The Nessler's reagent contains

EASY

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

Which element is not present in Nessler’s reagent?

EASY

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

What colour is formed in the reaction of ammonia with Nessler’s reagent?

MEDIUM

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

Formulae for Nessler's reagent is:

EASY

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

The pungent smell produced in the reaction of ammonium ions with $NaOH$ is due to the formation of

HARD

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

(X) \overset{KOH}{\to} (Y) (gas turns red litmus blue) + (Z) \overset{Zn + KOH}{\to} (Y) (gas) .

(X) \overset{Δ}{\to} gas (does not support combustion)

Identify (X) to (Z):

EASY

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

A white crystalline solid A on boiling with caustic soda solution gave a gas B which when passed through an alkaline solution of potassium mercuric iodide gave a brown ppt. The substance A on heating gave a gas C which rekindled a glowing splinter but did not give brown fumes with nitric oxide. The gas

C

HARD

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

0.33 M

solution of aluminium chloride

({AlCl}_{3})

is used for the quantitative analysis of

{Al}^{+ 3}

ions. If

NaOH

is added in

0.33 M {AlCl}_{3}

a while ppt is formed and when excess

NaOH

is added it dissolved by forming soluble tetrahydroxoaluminate ion

{[Al (OH)_{4}]}^{-}

, if

{NH}_{4}^{+}

ions are added to

Al (OH)_{4}^{-}

, then

HARD

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

A white crystalline solid 'A' on boiling with caustic soda solution gives a gas 'B' which on passing through an alkaline solution of potassium tetraiodomercurate (II) solution gives a brown ppt. The substance 'A' on heating evolves a neutral gas 'C', which is inert at room temperature and reactive in the presence of catalyst and does not give brown fumes with nitric acid oxide.

The gas 'C' is

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

In Nessler's reagent for the detection of ammonia, the active species is:

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

What is the correct statement about product in the following reaction?

K_{2} [H g I_{4}] + N H_{4} C l + K O H \to \underset{(B r o w n p p t .)}{P r o d u c t}

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

A colourless water soluble solid 'X' on heating gives equimolar quantities of Y and Z. Y gives dense white fumes with HCl and Z does so with NH₃. Y gives brown precipitate with Nessler's reagent and Z gives white precipitate with nitrates of Ag⁺, Pb²⁺ and

H g_{2}^{2 +}

. 'X' is :

MEDIUM

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

A colourless water soluble solid

' X'

on heating gives equimolar quantities of

Y

and

Z

Y

gives dense white fumes with

HCl

and

Z

does so with

{NH}_{3} . Y

gives brown precipitate with Nessler's reagent and

Z

gives white precipitate with nitrates of

{Ag}^{+}, {Pb}^{2 +}

and

{Hg}^{+} \cdot' X'

is:

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

Select the incorrect statement.

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

A white crystalline solid

(A)

on boiling with caustic soda solution gave a gas

(B)

, which when passed through an alkaline solution of potassium mercuric iodide gave brown precipitate. The substance

(A)

on heating gave a gas

(X)

, which rekindled a glowing splinter but did not give brown fumes with nitric oxide. The gas

(B)

is:

HARD

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

Nessler's reagent is used to detect

EASY

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

When ammonia gas is passed through Nessler's solution the colour becomes-

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Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

When ammonia gas is passed through Nessler's solution the colour becomes-

HARD

Chemistry>Practical Chemistry>Inorganic Qualitative Analysis>Tests for Ammonium Ion

A compound (A) on heating with an excess of caustic soda solution liberates a gas (B) which gives white fumes on exposure of $HCl$ . The resultant alkaline solution thus obtained after heating again liberates the same gas (B) when heated with zinc powder. Compound (A) on heating alone gives a neutral oxide of nitrogen not nitrogen gas. Choose the correct statement from the following:

Sodium hydroxide cannot be used to identify :

Important Questions on Inorganic Qualitative Analysis

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