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In the presence of dilute HCl, H(2)S res...

In the presence of dilute `HCl, H_(2)S` results in the precipitation of group II cations but not group IV cations during qualitative analysis. It is due to :

A

HCI activate `H_(2)S`

B

HCI increses cone of `CI^(Theta)` due to common ion effect

C

HCI decreses cone of `S^(2-)` due to common ion effect

D

HCI lowers the solubility of `H_(2)S`in soin

Text Solution

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The correct Answer is:
c
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CENGAGE CHEMISTRY ENGLISH-QUALITATIVE INORGANIC SALT ANALYSIS-Ex 8.2
  1. Which pair would not be expected to form precipitate when solution ...

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

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

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

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  5. Mg is not precipitate in group V because

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  6. In group V ,(NH(4))(2)CO(3) is added to precipitate out the carbonate...

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  7. DMG gives a rosy red crystalline ppt with

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  8. In the presence of dilute HCl, H(2)S results in the precipitation of g...

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  9. Prussian's blue is formed when Fe^(+2) ions are added to K(4)[Fe(CN...

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  10. Turnbull's blue is formed when Fe^(+2) ions are added to K(3)[Fe(CN)(...

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  11. If group IV the ppt of Zn(OH)(2) dissolve in excess of NaOH due to t...

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  12. Br(2) water in NaOH soin .Oxidises Mn(OH)(2) to a…. Ppt due to the fo...

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  13. Brown ppt ,of Mn(OH)2 on boiling with PbO(2) and cone HNO(3) yields...

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  14. A precipitate of ……would be obtained on adding HCI to a solution of ...

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  15. A precipitate of ……would be obtained on adding HCI to a solution of ...

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  16. Which of the sulphides of group II is orange ?

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  17. Which of the sulphides of group II is black or brownish black?

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  18. On passing H(2)S gas into first group filtrate sometimes yellow turbid...

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  19. The sodium carbonate beat test in which Na(2)CO(3) is used insteal o...

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  20. Orange coloured sodium cobaltinitrite Na(3)[Co(NO(3))(6)] is used fo...

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