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Aniline gets coloured on standing in air...

Aniline gets coloured on standing in air for a long time. Why?

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Aniline is easily oxidised on standing in air for a long time to form coloured products. Becausể of strogg electron donating effect (+R effect) of .NH_2. group, the electron density on the benzene ring increases.
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V PUBLICATION-AMINES-QUESTION BANK
  1. How will you convert benzene into aniline?

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  2. How is aminoethane (ethyl amine) obtained from ethanal (acetaldehyde )...

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  3. Aniline gets coloured on standing in air for a long time. Why?

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  4. Give reason Electrophilic substitution in case of aromatic amines take...

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  5. Which reagent is used to convert an amide into an amine with the same ...

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  6. Which reaction is used for converting a primary amide into a primary a...

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  7. CH3 CONH2 is a weaker base than CH3 CH2 N H2. Why?

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  8. Nitro compounds have higher boiling points than hydrocarbons having al...

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  9. Complete the following reactions (i) C6 H5 COOH N3 H/ Conc. H2 ...

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  10. Why is it necessary to add excess of mineral acid to diazotise AMINES?

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  11. What is Sandmeyer reaction?

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  12. Suggest a method to convert cyclohexanol to cyclohexylamine.

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  13. Direct nitration of aniline is not carried out why?

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  14. Primary, secondary and teritary amines can be distinguished using hins...

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  15. A mixture of two aromatic cómpounds (A) and (B) wás separated by disso...

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  16. Compound (A) with empirical formula 'fC, fH9 fN' on diazotisation give...

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  17. Why does bromination of aniline, even under very mild conditions, give...

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  18. Discuss one method by' which we can separate p-hydroxybenzoic acid and...

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  19. Sulphanilic acid is soluble in dil NaOH but not in dil HCl .Explain

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  20. The aqueous solution of a nitrogen and chlorine containing organic com...

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