O-LevelChemistryRates of Reaction5070/12 · May/June 2014 · Q21 Mark

Sulfur dioxide and oxygen react together. 2SO2(g) + O2(g) ⇌ 2SO3(g) ΔΗ = -197kJ/mol Which change(s) will increase both the rate of reaction and the equilibrium concentration of SO3? 1 adding a catalyst 2 increasing temperature 3 increasing pressure

A1 only

C1 and 3

D3 only

✓ Correct answer

D: 3 only

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

Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2014 Paper 1 Variant 2, question 2.

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

Which statement about catalysts is correct for a typical equilibrium reaction?

When a solution containing silver ions is added to a solution containing iron(II) ions, an equilibrium is set up. Ag+…

The oxide of an element X increases the rate of decomposition of hydrogen peroxide. At the end of the reaction the ox…

Which information is correct regarding the formation of ethanol by the process of fermentation? substances fermented…

Nylon, poly(ethene) and Terylene are macromolecules. In which of these macromolecules is the C=O group present in the…

Which partial structure is correct for the product of polymerisation of butene, CH2=CHCH2CH3?