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How is oxygen prepared in the laboratory...

How is oxygen prepared in the laboratory?

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Oxygen is prepared in the laboratory by heating potassium chlorate in presence of manganese dioxide `(MnO_(2))` as a catalyst at 623 K.
`2KClO_(3)overset(MnO_(2))rarr2KCl+3O_(2)`
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OSWAAL PUBLICATION-P - BLOCK ELEMENTS-TOPIC - 2 (GROUP - 15 ELEMENTS, THEIR PROPERTIES AND SOME IMPORTANT COMPOUNDS)(LONG ANSWER TYPE QUESTIONS)
  1. What happens when (i) Conc. H(2)SO(4) is added to CaF(2). (ii) SO(3) i...

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  2. Why does O(3) act as a powerful oxidizing agent?

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  3. Draw the structure of H(2)S(2)O(8).

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  4. Write the structure of oleum (H(2)S(2)O(7))

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  5. Predict the shape and the asked angle (90^(@)" or more or less") in th...

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  6. Oxygen shows catenation behaviour less than sulphur.

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  7. Sulphur has greater tendency for catenation than oxygen why?

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  8. Oxygen is a gas but sulphur a solid. Explain.

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  9. Why are the two S-O bonds in SO(2) molecule of equal strength?

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  10. Draw the structure of O(3) molecule.

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  11. Write the valence shell electronic configuration group - 16 elements.

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  12. How does atomic and ionic radii changes with in the group - 16 element...

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  13. Ionisation enthalphy of group - 16 elements decreases down the group W...

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  14. Group - 16 elements have lower ionisation enthalpy values compared to ...

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  15. Out of O and S which has higher negative electron gain enthalpy and wh...

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  16. How does electronegativity of group - 16 elements changes down the g r...

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  17. Oxygen and sulphur have difference in their melting point and boiling ...

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  18. Explain the reactivity of group - 16 elements with oxygen.

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  19. How is oxygen prepared in the laboratory?

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  20. Name the catalyst used in the preparation of oxygen from KClO(3) or de...

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