Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Calculations involving gas volumes
19 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →A sealed glass tube at rtp contains 0.42 moles of sulfur dioxide gas, SO₂. Calculate the volume, in dm³, of sulfur dioxide gas in the tube at rtp.
Question 2
5 marks · Hard
Answer and see the solution →Zinc reacts with dilute sulfuric acid to produce hydrogen gas according to the equation:
(a)[1 mark]State the volume, in dm³, occupied by 1 mole of hydrogen gas at rtp.
(b)[2 marks]Calculate the number of moles of hydrogen produced when 3.9 g of zinc reacts completely with excess sulfuric acid.
(Relative atomic mass: Zn = 65.)
(c)[2 marks]Calculate the volume, in dm³, of hydrogen gas produced at rtp from part (b).
Question 3
2 marks · Hard
Answer and see the solution →A sample of carbon monoxide, CO, has a volume of 6.0 dm³ at rtp. Calculate the number of moles of CO in the sample. Show your working.