Home
Class 12
CHEMISTRY
A certain compound (X) is used in labora...

A certain compound (X) is used in laboratory for analysis. Its aq. solution gave the following reactions.
On addition to Ag+ ion solution, a yellow ppt. is obtained which is insoluble in `NH_(4)OH`. Identify (X), giving reactions

Text Solution

Verified by Experts

`X - KI`
`Ag^(+)+KI rarr underset("Yellow ppt.")(AgI +K^(+))`
The white ppt. of `Cu_(2)I_(2)` is coloured brown due to the presence of `I_(2)`. On adding sodium thiosulphate, `I_(2)` is consumed. Therefore the ppt. appears white
Promotional Banner

Topper's Solved these Questions

  • Salt Analysis

    MOTION|Exercise Exercise - 1|69 Videos

  • Salt Analysis

    MOTION|Exercise Exercise - 2 (Level-I)|34 Videos

  • S-BLOCK

    MOTION|Exercise EXERCISE - 3 Level - II Previous Year | JEE adv|4 Videos

  • SOLID STATE

    MOTION|Exercise Exercise - 4 | Level-II|9 Videos

Similar Questions

Explore conceptually related problems

A certain compound (A) is used in the laboratory for analysis, its aqueous solution gives the following reactions: a. On addition to copper sulphate, a brown precipitate is obtained which turns white on addition of excess of the Na_(2)S_(2)O_(3) solution. b. On addition to the Ag^(o+) ion solution, a yellow curdy precipitate is obtained which is insoluble in ammonium hydroxide. Identify (A) and give equations for the reactions at steps (a) and (b).

A compound (A) is greenish crystalline salt which gave the following results : i) Addition of BaCl_(2) solution to solution of (A) results in the formation of a white ppt. (B), which is insoluble in dil. HCl. ii) On heating (A), water vapours and two oxides of sulphur, (C ) and (D) are liberated leaving a red brown residue (E). iii) (E) dissolves in warm conc. HCl to give a yellow solution (F). iv) With H_(2)S , the solution (F) yields a pale yellow ppt. (G), which when filtered, leaves a greenish filtrate (H). v) Solution (F) on treatment with thiocyanate ions gives blood red coloured compound (I). Identify the substances from (A) to (I). Yellow ppt (G) is a :

MOTION-Salt Analysis-Exercise - 4 Level-II
  1. A certain compound (X) is used in laboratory for analysis. Its aq. sol...

    Text Solution

    |

  2. Fe^(3+)overset(SCN^(-) ("excess"))rarr "Blood red (A)" overset(F^(-)("...

    Text Solution

    |

  3. Find A,B,C and D. Also write equations A to B and A to C.

    Text Solution

    |

  4. underset(("White fumes having smell"))(B)overset("Moist air")(larr)und...

    Text Solution

    |

  5. A metal nitrate reacts with KI to give a black precipitate which on ad...

    Text Solution

    |

  6. A solution when diluted with H(2)O and boiled, it gives a white precip...

    Text Solution

    |

  7. CuSO(4) decolourises on addition of KCN, the product is

    Text Solution

    |

  8. Consider a titration of potassium dichromate solution with acidified M...

    Text Solution

    |

  9. The species present in solution when CO(2) is dissolved in water

    Text Solution

    |

  10. A solution of colourless salt H on boiling with axcess NaOH produces a...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  16. An aqueous solution of a mixture of two inorganic saits, when treated ...

    Text Solution

    |

  17. An aqueous solution of a mixture of two inorganic saits, when treated ...

    Text Solution

    |

  18. Among PbS, CuS, MnS, Ag(2)S, NiS, CoS, Bi(2)S(3) and SnS(2) the total ...

    Text Solution

    |

  19. The pair(s) of ions where BOTH the ions are precipitted upon passing H...

    Text Solution

    |

  20. The reagment (s) that can selectively precipitate S^(2-) from a mixtu...

    Text Solution

    |

  21. In the following reaction sequence in aqueous solution, the species X,...

    Text Solution

    |