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The orange colour of dichromate solution...

The orange colour of dichromate solution changes of blue on heating with alkalies due to the formation of chromate ions.

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Yellow , chromate
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The yellow colour of chromates changes to orange on acidification due to the formation of

The colour of potassium dichromate is due to

Potassium dichromate acts as a strong oxidising agent in the acidic medium. When heated with a metal chloride and conc. sulphuric acid, it gives orange red fumes. On passing these fumes through sodium hydroxide, it gives a yellow solution (X) and this acidified solution gives yellow precipitate (Y) with lead acetate. On heating potassium dichromate with KOH, it forms a yellow solution (Z) which on acidification changes to orange colour. Acidified solution of dichromate ion gives deep blue colour with H_2O_2 due to the formation of (P) The oxidation state of Cr in compound P

When SO_(2) gas is allowed to react with acidified potassium dichromate solution , the yellow colour of the solution changes to green. This is due to the formation of

The yellow colour of chromates changes to orange on acidification due to formation of:

Potassium dichromate acts as a strong oxidising agent in the acidic medium. When heated with a metal chloride and conc. sulphuric acid, it gives orange red fumes. On passing these fumes through sodium hydroxide, it gives a yellow solution (X) and this acidified solution gives yellow precipitate (Y) with lead acetate. On heating potassium dichromate with KOH, it forms a yellow solution (Z) which on acidification changes to orange colour. Acidified solution of dichromate ion gives deep blue colour with H_2O_2 due to the formation of (P) The orange red fumes obtained on heating potassium dichromate with a metal chloride and conc. H_2SO_4 is due to the formation of

Potassium dichromate acts as a strong oxidising agent in the acidic medium. When heated with a metal chloride and conc. sulphuric acid, it gives orange red fumes. On passing these fumes through sodium hydroxide, it gives a yellow solution (X) and this acidified solution gives yellow precipitate (Y) with lead acetate. On heating potassium dichromate with KOH, it forms a yellow solution (Z) which on acidification changes to orange colour. Acidified solution of dichromate ion gives deep blue colour with H_2O_2 due to the formation of (P) The yellow solution (X) is

Potassium dichromate acts as a strong oxidising agent in the acidic medium. When heated with a metal chloride and conc. sulphuric acid, it gives orange red fumes. On passing these fumes through sodium hydroxide, it gives a yellow solution (X) and this acidified solution gives yellow precipitate (Y) with lead acetate. On heating potassium dichromate with KOH, it forms a yellow solution (Z) which on acidification changes to orange colour. Acidified solution of dichromate ion gives deep blue colour with H_2O_2 due to the formation of (P) The yellow solution (Z) on acidification gives

MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-PRACTICE PROBLEM
  1. Give reason, Mn^(2+) ion is more paramagnetic than Fe^(2+) ion.

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  2. The oxidation state of Cr in K(2)Cr(2)O(7) is:

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  3. The orange colour of dichromate solution changes of blue on heating wi...

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  4. MnO2 on heating with potassium hydroxide in the presence of air forms...

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  5. Chromite is ...........

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  6. KMnO4 overset("heat")(to) ………… + MnO2 + …………..

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  7. Write ionic equation showing KMnO4 acting as an oxidising agent in ac...

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  8. What is the oxidation state of (i) Cr in dichromate ion (ii) ...

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  9. The equivalent weight of KMnO(4) in (a) neutral medium, (b) acidic med...

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  10. Complete the chemical reactions : (i) MnO4^(-) + SO2 + H^(+) to ...

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  11. What is the shape of chromate ion ?

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  12. In chromyl chloride test orange red vapours are obtained. These are du...

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  13. Which out of the two ,La(OH)(3) and Lu(OH)(3), is more basic and why?

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  14. Most stable oxidation state of Lanthanoids

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  15. How many unpaired electrons are present in Gd(Z = 64) ?

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  16. Name the actinoid used for the manufacture of fine rods for atomic rea...

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  17. Arrange Ce^(3+) (Z = 58), Sm^(3+) (Z = 62) and Yb^(3+ ) (Z = 70) in d...

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  18. Name the basic cause of similar atomic radii of Hf and Zr.

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  19. Does actinoids show actinoid contraction similar to lanthanoid contrac...

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  20. Name the trivalent lanthanoid having the configuration [Xe]4f^7

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