Chemistry · May / June 2026 · Paper 12 · Question 8
5070The mole and the Avogadro constant
Nitrogen monoxide and oxygen react to form nitrogen dioxide. 2NO(g) + O$_2$(g) → 2NO$_2$(g) What is the maximum volume of nitrogen dioxide that may be obtained when 1 dm$^3$ of nitrogen monoxide reacts with 2 dm$^3$ of oxygen when all volumes are measured at room temperature and pressure?
- A1 dm$^3$
- B2 dm$^3$
- C3 dm$^3$
- D4 dm$^3$
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Correct answer: A. 1 dm$^3$
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