Home
Class 11
CHEMISTRY
The sodium extract on acidification with...

The sodium extract on acidification with acetic acid and then adding lead acetate solution gives a black precipitate. The organic compound contains:

A

nitrogen

B

halogen

C

sulphur

D

phosphorous

Text Solution

Verified by Experts

The correct Answer is:
C

A black precipitate of PbS is formed.
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS)

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|15 Videos
  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS)

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|15 Videos
  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM)

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|20 Videos
  • ORGANIC CHEMISTRY: BASIC PRINCIPLES - PART I (NOMENCLATURE)

    BRILLIANT PUBLICATION|Exercise LEVEL-II |41 Videos

Similar Questions

Explore conceptually related problems

A salt (A) when heated with K_2 Cr_2 O_7 and conc. H_2 SO_4 liberates a gas which is absorbed in NaOH solution. The NaOll solution turns yellow. When this solution is acidified with acetic acid and lead acetate solution is added, a yellow precipitate (B) is formed. The acid radical present in the salt is

A salt (A) when heated with K_2 Cr_2 O_7 and conc. H_2 SO_4 liberates a gas which is absorbed in NaOH solution. The NaOll solution turns yellow. When this solution is acidified with acetic acid and lead acetate solution is added, a yellow precipitate (B) is formed. (A) is mixed with MnO_2 and heated with conc. H_2 SO_4 when a gas (C) is evolved which tums starch-iodide paper blue. The compound formed, which turns NaOH solution yellow, is:

A salt (A) when heated with K_2 Cr_2 O_7 and conc. H_2 SO_4 liberates a gas which is absorbed in NaOH solution. The NaOll solution turns yellow. When this solution is acidified with acetic acid and lead acetate solution is added, a yellow precipitate (B) is formed. (A) is mixed with MnO_2 and heated with conc. H_2 SO_4 when a gas (C) is evolved which tums starch-iodide paper blue. What is the colour of gas which is evolved when salt (A) is heated with MnO_2 and H_2 SO_4 ?

When a white crystalline compound 'X' is heated with K_(2)Cr_(2)O_(7) and concentrated H_(2)SO_(4) a red dish brown gas 'A' is evolved. On passing 'A' into caustic soda solution, a yellow coloured solution of 'B' is obtained. Neutralising the solution 'B' with acetic acid and on subsequent addition of lead acetate a yellow precipitate C is obtained. When 'X' is heated with NaOH a colourless gas is evolved and on passing this a gas into K_(2)HgI_(4) (Nessler's reagent) solution a reddish brown precipitate D is formed. Identify '(A), (B), (C), (D) and X. Write equations for the reactions involved.

For the detection of sulphur, using lead acetate solution, the fusion extract is acidified with

When lead acetate solution is added to the fusion extract of thiamine, acidified with acetic acid, the colour of the precipitate obtained is

CH -=CH reacts with acetic acid in presence of Hg^(2+) to give

When some sodium acetate is added to a solution of acetic acid, the concentration of unionized acetic acid increases. What is the phenomenon involved? Substantiate.

BRILLIANT PUBLICATION-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS) -LEVEL-II
  1. A compound contains 38.8%C, 16%H, and 45.2%N. The formula of the compo...

    Text Solution

    |

  2. An organic compound on analysis gave C = 42.8%, H = 7.2%, and N = 50%....

    Text Solution

    |

  3. 0.14 gm of an acid required 12.5 ml of 0.1 N NaOH for complete neutral...

    Text Solution

    |

  4. 0.24 g of a volatile liquid on vapourisation gives 45 ml of vapours at...

    Text Solution

    |

  5. Liquid benzene (C(6)H(6)) burns in oxygen according to 2C(6)H(6)(l)+15...

    Text Solution

    |

  6. Some organic compounds are purified by distillation at low pressure be...

    Text Solution

    |

  7. Which is useful for separating benzoic acid from a mixture of benzoic ...

    Text Solution

    |

  8. 500 mL of a hydrocarbon gas burtn in excess of oxygen yielded 2500 mL ...

    Text Solution

    |

  9. Which compound present in sodium extract prepared using thio urea, giv...

    Text Solution

    |

  10. The sodium extract on acidification with acetic acid and then adding l...

    Text Solution

    |

  11. An organic compound is fused with fusion mixture and extracted with HN...

    Text Solution

    |

  12. Which one of the following hydrocarbons is burnt in excess of oxygen, ...

    Text Solution

    |

  13. Sodium nitroprusside reacts with sulphide ion to give a purple colour ...

    Text Solution

    |

  14. 1.575 g of an organic acid was dissolved in 250 mL of water. 20 mL of ...

    Text Solution

    |

  15. In the Kjeldahl's method for estimation of nitrogen in a soil sample, ...

    Text Solution

    |

  16. 0.0833 mole of a carbohydrate of empirical formula CH(2)O contains 1.0...

    Text Solution

    |

  17. Analysis of an organic compound gave 74% C, 8.65% H and 17.3% N. What ...

    Text Solution

    |

  18. 0.16 g of a dibasic organic acid required 25cm^(3) of 0.1 M NaOH for c...

    Text Solution

    |

  19. 9.9 g amide with molecular formula C(4)H(5)N(x)O(y) on heating with al...

    Text Solution

    |

  20. In a compound C, H and N atoms are present in 9 : 1 : 3.5 by weight. M...

    Text Solution

    |