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A white ppt obtained in the analysis of...

A white ppt obtained in the analysis of a mixture becomes black on treatment with `NH_(3)` or `NH_(4)OH` due to the formation of finely divided Hg and Hg `(NH_(2))CI` i.e. `[Hg+Hg (NH_(2))CI]` The salt may be

A

`PbCI_(2)`

B

`AgCI`

C

`Hg_(2)CI_(2)`

D

`Hg_(2)CI_(2)`

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The correct Answer is:
d
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CENGAGE CHEMISTRY ENGLISH-QUALITATIVE INORGANIC SALT ANALYSIS-Ex 8.2
  1. A white ppt obtained in the anylsis of a mixture becomes black ...

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  2. When excess of SnCl(2) is added to a soin of HgCl(2) a white ppt...

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  3. A white ppt obtained in the analysis of a mixture becomes black on...

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  4. Which of the following ions give coloured aqueous solution?

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  5. Which of the following is insoluble in dil HNO(3)

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  6. Which of the following sulphate is insoluble in H(2)O

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  7. Which one has the minimum solubility product ?

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  8. When H(2)S is passed through an ammonium salt solution X, a white ...

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  9. With Cu^(2+) ions [F(CN)(6)]^(4-) gives a ……..ppt of Cu(2)[Fe(CN)(6)]...

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  10. With Co^(2+) ions [Fe(CN)(6)]^(3-) gives a ……..ppt of Co(3)[Fe(CN)(6)...

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  11. With Co^(2+) ions NH(4)SCN gives a ……..ppt of (NH(4))(2)[Co(CNS)(4)] ...

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  12. Lead has been placed in qualitative group analysis 1st and 2nd because

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  13. With Fe^(3+) ions [Fe(CN)(6)]^(4-) gives prussian blue colouration ...

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  14. A metal chloride on heating with K(2)Cr(2)O(7) gives a yellow ppt i...

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  15. With Zn^(2+) ions [Fe(CN)(6)]^(4-) ions gives …ppt

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  16. which among the following pairs of ions cannot be separated by H(2)S i...

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  17. Which pair would not be expected to form precipitate when solution ...

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  18. Which one of the following can be used in place of NH(4)Cl for ident...

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  19. Conc HNO(3) is added before proceeding to test for group III. This...

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  20. In IV th group the ppt of Mn(OH)(2) in excess of NaOH , turns brown ...

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