Home
Class 12
CHEMISTRY
The violet-red colour in the Lassaigne’s...

The violet-red colour in the Lassaigne’s test of sulphur is due to
`S^(2-) + underset("Sodium nitro prusside")([Fe(CN)_(5)(NO)]^(2-)) to (3)`

A

`FeCl_(3)`

B

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

C

`Na_(4)[Fe(CN)_(5)NOS]`

D

None of these

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment(SECTION B)|6 Videos

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment(SECTION C)|73 Videos

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES

    AAKASH INSTITUTE ENGLISH|Exercise Exercise|70 Videos

  • MOCK_TEST_20

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|29 Videos

  • ORGANIC CHEMISTRY: SOME BASIC PRINCIPLE AND TECHNIQUES

    AAKASH INSTITUTE ENGLISH|Exercise TRY YOURSELF|28 Videos

Similar Questions

Explore conceptually related problems

The Na metal is used in "Lassaigne’s test" is due to

In Na_(2)[Fe(CN)_(5)NO] , sodium nitroprusside:

The violet colour obtained during test of sulphur in the Lassaigne's test is formed due to reaction of Na_2S with

In a Lassaigne's test for sulphur in the organic compound with sodium nitroprusside solution the purple colour formed is due to

In the Lassaigne's test for the detection of sulphur, the purple colour is due to the formation of

Qualitative analysis of organic compounds is performed by Lassaigne's test by fusion with metallic sodium, by which the covalent compounds are converted into ionic compounds. Extra elementsline N,S,P andhalogensaredetected by their usual tests. Q. Violet colour in the detection of sulphur with sodium nitroprusside is due to the formation of

CNS^(ө) ions give red colour with Fe^(3+) ions in aqueous solution as: Fe^(3+)(aq) + 3CNS^(ө)(aq) rarr Feunderset("red")((CNS))_(3)(aq) If 0.1 M KCNS solution is separated from 0.1 M FeCl_(3) solution by means of a semi-permeable membrane, red colour will appear on: a. FeCl_(3) soluion , b. KCNS solution side , c. Both sides , d. Neither side

The complex Na_(2)[Fe(CN)_(5)NO] is called :

In the Lassaigne's test , one of the organic compound gave red colour with FeCl_(3) .Ccompound can be:

The colour developed when Na_(2)S is added to Na_(2)[Fe(CN)_(5)NO] is,

AAKASH INSTITUTE ENGLISH-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES -Assignment(SECTION-A)
  1. Steam distillation is applied for the separation of those compounds wh...

    Text Solution

    |

  2. The process of differential extraction is based upon

    Text Solution

    |

  3. Glycerol decomposes at its boiling point, the purification of glycerol...

    Text Solution

    |

  4. The Na metal is used in "Lassaigne’s test" is due to

    Text Solution

    |

  5. Which of the following compound will give blood red colour while doing...

    Text Solution

    |

  6. The violet-red colour in the Lassaigne’s test of sulphur is due to ...

    Text Solution

    |

  7. The function of boiling the sodium extract with concentrated nitric ac...

    Text Solution

    |

  8. A mixture of acetone and methanol can be separated by

    Text Solution

    |

  9. In dumas method for the estimation of nitrogen in an organic compound,...

    Text Solution

    |

  10. 0.2g of an organic compound on complete combustion produces 0.18g of w...

    Text Solution

    |

  11. The substance which can be used as adsorbent in column chromatography ...

    Text Solution

    |

  12. In the estimation of Duma's method 1.18 of an organic compound gave 22...

    Text Solution

    |

  13. 0.5 g of an organic compound cantaining N on Kjeldahl analysis require...

    Text Solution

    |

  14. 0.4 g of Organic Compound gave 0.188g of AgBr. The percentage of Br in...

    Text Solution

    |

  15. F cannot be tested by "Lassaigne’s test" because

    Text Solution

    |

  16. 0.64 g of organic compound give 1.2535 g of Mg(2)P(2)O(7) . percentage...

    Text Solution

    |

  17. Which of the following will not give the Lassaigne test for nitrogen?

    Text Solution

    |

  18. Which of the following will not give the Lassaigne test for nitrogen?

    Text Solution

    |

  19. An organic compound ‘A’ is oxidized with followed by boiling with ...

    Text Solution

    |

  20. Which is not correct match?

    Text Solution

    |