A-LevelChemistryNitrogen and sulfur9701/12 · Oct/Nov 2014 · Q181 Mark

Total removal of the pollutant sulfur dioxide, SO₂, is difficult. The quantities emitted from furnace chimneys can be lowered by using desulfurisation plants. The gases are reacted with calcium hydroxide to remove the SO₂. What is the main product formed initially?

ACa(HSO₄)₂

BCaS

CCaSO₃

DCaSO₄

✓ Correct answer

C: CaSO₃

Oracle Prep sorts past-paper questions by topic, so you can drill Nitrogen and sulfur and see which topics are most likely to come up next.

Topic: Nitrogen and sulfur, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 2, question 18.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

When burned, sulfur forms a gaseous product X which can be oxidised to produce a gas Y. Gas Y reacts with water to pr…

Ammonia and chlorine react together in the gas phase. 8NH₃ + 3Cl₂ → N₂ + 6NH₄Cl Which statements are correct? 1 Ammon…

In which different forms does nitrogen exist in compounds? 1 bonded by a triple covalent bond 2 as part of a cation 3…

Reagent X is added separately to 2-methylbutan-1-ol and 3-methylbutan-2-ol. The visible results are different. What i…

Propan-2-ol can be converted into 2-chloropropane using reagent M followed by reagent N. Which row is correct?

1-chloro-2-methylpropane and 2-bromo-2-methylbutane react separately with aqueous silver nitrate in ethanol. Both rea…