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JAMB Chemistry 2003 Question 39

Question 39

Nitrogen and its Compounds

In the diagram above, Y is

Diagram for this question
  1. A.NO
  2. B.NO2
  3. C.N2O5
  4. D.N2O4
Show the answer and explanation

Answer: D (N2O4)

Explanation

Heating lead(II) nitrate gives NO2 and O2. In the U-tube cooled by the freezing mixture the NO2 condenses to liquid dinitrogen tetraoxide, N2O4; oxygen passes on.