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How is potassium permanganate prepared i...

How is potassium permanganate prepared in the laboratory?

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By oxidation of manganese (II) ion salt by peroxydisulphate, .2 (Mn)^(3+)+5 S_(3)^(2) (O)_(s)^(3)+8 (H)_(2) (O)_(-) rarr 2 (NnO)_(4)+10 (SO)_(4)+16 (H).
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V PUBLICATION-THE d- AND f- BLOCK ELEMENTS-QUESTION BANK
  1. . Name the metal, with highest melting point?

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  2. Name the common ores of i) Chromiüm ii) Molybdenum iii) Tungsten

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  3. How is potassium permanganate prepared in the laboratory?

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  4. What is the reaction between KMnO(4) and sodium thiosulphate?

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  5. Potassium permanganate KMnO(4) is not a primary standard Why?

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  6. Actinoids show, a large number of oxidation states Why?

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  7. Write the reason for the statement given below: Transition elements sh...

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  8. Which of the following would be coloured? Ti^(3+),Mn^(2+),Sc^(3+),Fe^...

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  9. Why do transition elements have many irregularities in their electroni...

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  10. Which one is paramagnetic is Sc^(3+) or Cr^(4+). Why?

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  11. Which is more basic LaOH(3) or LuOH(3) . Why?

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  12. Why Sm^(2+), Eu^(2+) and Yb^(2+) in solutions 'are good reducing agen...

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  13. Why is the third ionisation energy of manganese (At No. 25) unexpected...

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  14. Write all possible oxidation states of an element having atomic number...

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  15. Why is it not advisable to dissolve KMnO(4) in conc.H(2) SO(4)

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  16. Write the electronic configuration of Gadolinium (Z = 64) and its most...

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  17. There is a covalency between Mn and Oxygen in permanganate Ion. Why?

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  18. The +3 oxidation states of lanthanum(z=57), gadolinium (z=64) and lute...

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  19. What happens when chromates are keptin acidic solution and dichromates...

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  20. What is meant by 18 carat gold?

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