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5.3 Equilibria

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Question 15

Sulfuryl chloride gas decomposes in a closed container.

SO2Cl2(g)⇌SO2(g)+Cl2(g) \mathrm{SO_{2}Cl_{2}(g) \rightleftharpoons SO_{2}(g) + Cl_{2}(g)} SO2​Cl2​(g)⇌SO2​(g)+Cl2​(g)

The table shows the percentage of sulfuryl chloride decomposed when equilibrium is reached under different conditions.

Temperature in °CPressure in kPaSulfuryl chloride decomposed in %
30020018
45020042
45050029

A further experiment is carried out at 500 °C and 100 kPa.

a.

State whether the percentage of sulfuryl chloride decomposed in the further experiment will be less than, equal to or greater than 42%.

[1]
b.

Explain your answer using the data and the equation.

[4]
Markscheme

5.3 Equilibria Questions

  1. GCSE
  2. /Chemistry
  3. /5.3 Equilibria

124 exam-style questions on OCR GCSE Chemistry 5.3 Equilibria, covering 5.3.1 Reversible reactions and dynamic equilibrium and 5.3.2 Changing the position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.

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