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Which of the following is the best…preparation of oxygen?

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Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) of  

  • A. Pb
  • B. Zn
  • C. Ca
  • D. Na




Heating of lead(II)trioxonitrate (v) decomposes it to gives off oxygen, lead oxide, and nitrogen dioxide.

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Now for the right answer to the above question:

  1. Option A is correct.
  2. Option B is incorrect.
  3. C is incorrect.
  4. D is not the correct answer.


You may please note these/this:

  • Sodium nitrate also decomposes on heating to give off oxygen, but that of lead is more common.

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/culled from 2019 JAMB-UTME Chemistry question 10/

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