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What happens when potassium permanganate...

What happens when potassium permanganate crystals are heated?

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When potassium permanganate crystals are heated at 513 K it decomposes to give oxygen gas.
`2KMnO_(4)rarrK_(2)MnO_(4)+MnO_(2)+O_(2)`
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SUBHASH PUBLICATION-THE 'd' - AND 'f' - BLOCK ELEMENTS -Question and Answer
  1. How is potassium permanganate manufactured from MnO(2) (pyrolusite)?

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  2. Name a compound which is isostructural with KMnO(4).

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  3. What happens when potassium permanganate crystals are heated?

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  4. What is the shape of manganate and permanganate ions? Write structures...

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  5. What is the magnetic nature of manganate and permanganate ions.

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  6. Give four examples to show that acidified KMnO(4) is an oxidising agen...

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  7. What is lanthanoid contraction? Mention the cause for it.

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  8. What is lanthanoid contraction? Write the general oxidation state of a...

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  9. Give two consequences of lanthanoid contraction.

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  10. What happens when lanthanoids are heated in Oxygen

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  11. What happens when lanthanoids are heated in Nitrogen

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  12. What happens when lanthanoids are heated in Halogen

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  13. What happens when lanthanoids are heated in Carbon?

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  14. How lanthanoids reacts with water and dil. Acids?

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  15. What is mischmetall? Give its one use.

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  16. What is actinoid contraction? Why actinoid contraction is greater than...

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  17. Give reason: Actinoid contraction is greater from element to element t...

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  18. Give general oxidation state of actinoids. Why actinoids shows variabl...

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  19. Zr and Hf have almost identical atomic radii. Give reason.

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  20. Give reasons: Actinoids show variable oxidation states.

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