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p-Amino-N,N-dimethylaniline is added to ...

`p`-Amino-`N,N`-dimethylaniline is added to a strongly acidic solution of `X`.The resulting solution is treated with few drops of aqueous solution of `Y` to yield blue colouration due to the formation of methylene blue.Treatment of the aqueous solution of `Y` with the reagent potassium hexacyanoferrate`(II)` leads to the formation of an intension blue precipitate.The precipitate dissolves on excess addition of the reagent.Similarly, treatment of the solution of `Y` with the solution of potassium hexacyanoferrate`(III)` leads to a brown coloration due to the formation of `Z`.
The compound `Z` is:

A

`Mg_(2)[Fe(CN)_(6)]`

B

`Fe[Fe(CN)_(6)]`

C

`Fe_(4)[Fe(CN)_(6)]_(3)`

D

`K_(2)Zn_(3)[Fe(CN)_(6)]_(2)`

Text Solution

Verified by Experts

The correct Answer is:
B

The compound `X` is `Na_(2)S` and `Y` is `FeCl_(3)`
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p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene blue. Treatment of aqueous solution of Y with reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, the treatment of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z. Q. Compound Y is

p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene blue. Treatment of aqueous solution of Y with reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, the treatment of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z. Q. Compound X is

p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of X. The resulting solution is treated with a few drops of aqueous solution of Y to yield blue colouration due to the formation of methylene blue. Treatment of aqueous solution of Y with reagent potassium hexacyanoferrate (II) leads to the formation of an intense blue precipitate. The precipitate dissolves on excess addition of the reagent. Similarly, the treatment of the solution of Y with the solution of potassium hexacyanoferrate (III) leads to a brown colouration due to the formation of Z. Q. Compound Z is

RESONANCE-QUALITATIVE ANALYSIS PART 1-EXERCISE 3
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  2. A white precipitate is obtained when a solution is diluted with H(2)O ...

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  3. In blue solution of copper sulphate excess of KCN is added then solut...

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  4. MgSO(4) +NH(4)OH + Na(2)HPO(4) to white crystalline precipitate.The fo...

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  5. A solution of a metal ion when treated with KI gives a red precipitate...

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  6. A solution of colourless salt H on boiling with excess NaOH produces a...

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  7. p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of ...

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  8. p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of ...

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  9. p-Amino-N,N-dimethylaniline is added to a strongly acidic solution of ...

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  10. When a metal rod M is dipped into an aqueous colourless concentrated s...

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  11. When a metal rod M is dipped into an aqueous colourless concentrated s...

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  12. When a metal rod M is dipped into an aqueous colourless concentrated s...

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  13. Passing H(2)S gas into a mixture of Mn^(2+) , Ni^(2+) , Cu^(2+) and Hg...

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  14. The equilibrium 2Cu(I) hArr cu^(0) +Cu^(II) in aquous medium at 25...

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  15. For the given aqueous reaction which of the statement(s) is (are) true...

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  16. Concentrated nitric acid, upon long standing, turns yellow-brown due t...

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  17. Upon treatment with ammoniacal H(2)S, the metal ion that precipitates ...

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  18. An aqueous solution of a mixture of two inorganic salts, when treated ...

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  19. An aqueous solution of a mixture of two inorganic salts, when treated ...

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  20. Which one of the following statement is correct?

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