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Can NH(4)Cl be replaced by any other amm...

Can `NH_(4)Cl` be replaced by any other ammonium salt for the precipitation of group III cations?

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Yes `NH_(4)NO_(2)` can be used in place of `NH_(4)Cl` for the precipitation of group III cations ammonium sulphate cannot be used as it may precipitate `Ca^(2+),Ba^(2+)` and `Sr^(2+)` as insoluble sulphates.
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The role of NH_(4)Cl in the precipitation of the hydroxides of group III cations is to:

CENGAGE CHEMISTRY-QUALITATIVE INORGANIC SALT ANALYSIS-Viva Voce Questions And Part-C (Analysis Of Cations)
  1. Why do we add excess of NH(4)Cl and NH(4)OH in the precipitation of gr...

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  2. Why is it essential to oxidise ferrous salt to ferric salt in group II...

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  3. Can NH(4)Cl be replaced by any other ammonium salt for the precipitati...

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  4. How will you distinguish between ferrous and ferric salts?

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  5. Can we add NH(4)OH first and NH(4)Cl later in the analysis of group II...

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  6. Can we use NaCla and NaOH in place of Na(4)Cl and NH(4)OH in the group...

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  7. Why are Zn,MnNi,Co not precipitated n the group III as hydroxides?

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  8. Why are the group IV cations not precipitated as sulphides on passing ...

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  9. Why is a brownish ppt. obtained in group II even if iron aluminium and...

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  10. Why sometimes, a black coloured precipitate obtained in group IV even ...

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  11. Why excess of NH(4)OH is used in precipitating the sulphides of group ...

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  12. Why sometimes colloidal precipitate is obtained in group IV? Comment

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  13. Why is NH(4)Cl essential in the precipitation of group V cations?

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  14. Does the excess of NH(4)Cl affect the precipitation of group V cations...

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  15. Why are all aqueous solution of the cobaltous salts pink?

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  16. At times NH(4)OH is added before adding (NH(4))(2)CO(3) to precipitate...

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  17. How will you remove the excess of NH(4)Cl before adding (NH(4))(2)CO(3...

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  18. Why is CaSO(4) not precipitated on adding ammonium sulphate to a solut...

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  19. At times warming is suggested while precipitating group V cation expla...

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  20. Can we use NaCO(3) in place of (NH(4))(2)CO(3) in group V?

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