0654.C3.3.04 — Use the molar gas volume, taken as 24 dm3 at room temperature and pressure, r.t.p., in calculations involving gases: past paper questions
Real questions on 0654.c3.3.04 — use the molar gas volume, taken as 24 dm3 at room temperature and pressure, r.t.p., in calculations involving gases
The newest 6 of 6 written questions. Open one to see it on the real paper.
- 0973/41 · May/June 2026 · Q7d[3]
(d) The reaction makes 1.00g of carbon dioxide gas. Calculate the volume of carbon dioxide gas made at room temperature and pressure. The volume of one mole of any gas is 24dm* at room temperature and pressure (r.t.p.). [M,: COo, 44] volume Carbon diOxide .......... [3]
See it on the paper → - 0973/41 · October/November 2024 · Q8c[3]
Reactions X and Y both produced 46 cm 3 of hydrogen gas measured at room temperature and pressure (r.t.p.). Calculate the mass of 46 cm 3 of hydrogen gas. The volume of one mole of any gas is 24 dm 3 at room temperature and pressure (r.t.p.). Show your working. [M r : H 2 , 2] mass of 46 cm 3 of hydrogen gas = g
See it on the paper → - 0973/41 · May/June 2023 · Q8d[3]
Zinc reacts with sulfuric acid, H 2 SO 4 , to make zinc sulfate, ZnSO 4 , and hydrogen gas. Zn + H 2 SO 4 ZnSO 4 + H 2 3.35 g of zinc reacts with excess dilute sulfuric acid to make 0.1 g of hydrogen gas. Calculate the volume occupied by 0.1 g of hydrogen gas. The volume of one mole of any gas is 24 dm 3 at room temper...
See it on the paper → - 0973/41 · October/November 2022 · Q8b[3]
A petrol car makes 236 g of carbon monoxide gas when 1 kg of petrol is burnt. Calculate the volume occupied by 236 g of carbon monoxide gas. The molar gas volume at room temperature and pressure is 24 dm 3 . Show your working. volume = dm 3
See it on the paper → - 0973/42 · May/June 2022 · Q11e[3]
In an experiment, 114 g of octane react with oxygen. The mass of carbon dioxide gas made is 352 g. Calculate the volume occupied by 352 g of carbon dioxide gas. Show your working. The volume of one mole of any gas is 24 dm 3 at room temperature and pressure (r.t.p.). [A r : C, 12; O, 16] volume = dm 3
See it on the paper → - 0973/41 · May/June 2020 · Q5b(iii)[2]
The total volume of chlorine gas produced at 25 °C in an electrolysis experiment is 4.8 cm 3 . Calculate the number of moles of chlorine gas in 4.8 cm 3 . The molar gas volume is 24 dm 3 . number of moles =
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What examiners said
Almost all candidates attempted to calculate the volume occupied by the gas. Many candidates incorrectly calculated the formula mass Mr of H2 as 1, resulting in an error carried forward and a final answer of 2.4. Some candidates used alternative methods to calculate the mass by first calculating the moles of zinc used as they recognised there was a 1:1 ratio. This was acceptable.
— Examiner report, May/June 2023, 0973/41 Q8(d) (Cambridge)
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