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Chemistry · May / June 2019 · Paper 12 · Question 12

5070The mole and the Avogadro constant

3.0 dm3 of sulfur dioxide is reacted with 2.0 dm3 of oxygen. 2SO2(g) + O2(g) → 2SO3(g) Assuming the reaction goes to completion and that all gases are at room temperature and pressure, which volume of sulfur trioxide is formed?

  1. A2.0 dm3
  2. B3.0 dm3
  3. C4.0 dm3
  4. D5.0 dm3

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Correct answer: B. 3.0 dm3

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