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Why heavy metal chlorides such as Hg(2)C...

Why heavy metal chlorides such as `Hg_(2)Cl_(2), AgCl, PbCl_(2)` etc. do not respond to chromyl chloride test.

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Because heavy metal chlorides are partially dissociated. This test is given generally by lonic chloride.
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S_(1) : Silver iodide is fairly soluble in hypo solution. S_(2) : Heavy metal chloride like AgCl,HgCl_(2) etc. also respond to Chromyl chloride test. S_(3) : Bromine reacts with KI liberating violet vapours of iodine. S_(4) : Diphenylamine reagent test is also given by nitrites chlorates, bromates, iodates, etc. in addition to NO_(3)^(-)

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RESONANCE-QUALITATIVE ANALYSIS (ANION)-Exercise-1
  1. Dilute Hydrochloric acid contains chloride ions but it doesnot give po...

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  2. Identify the gas A, B and C.

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  3. Why heavy metal chlorides such as Hg(2)Cl(2), AgCl, PbCl(2) etc. do no...

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  4. Why is a freshly prepared solution of FeSO(4) used for the detection o...

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  5. Cu^(2+) " and" Ba^(2+) interfere in the flame test for borate, why ?

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  6. In which of the following reagents, the white precipitate fo PbSO(4) i...

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  7. How will you distinguish between sulphite and sulphate ions ?

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  8. When a metal sulphate is heated in dry test tube, the colour changes f...

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  9. Which of the following can not evolve more than one gas (vapour) if he...

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  10. On heating, a white amorphous inorganic compound becomes yellow and on...

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  11. Which of the following metal carbonates liberate. CO(2)(g) on heating ...

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  12. In which of the following reactions a brown coloured gas is evolved ?

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  13. Why is concentrated HCl used to dissovle the given metal salt in the f...

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  14. The hottest part of the flame of a Bunsen burner is the

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  15. Metal (M) shows crimson red colour in flame test and its halide is del...

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  16. In Borax bead test, metal oxides react with B(2)O(3) and form a colour...

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  17. Which does not give borax bead test?

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  18. In the Borax bead test of Co^(2+), the blue colour of bead is due to t...

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  19. A salt gives white residue in charcoal cavity test but in cobalt nitra...

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  20. Which of the following anions are identified by dil. HCl :

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