O-LevelChemistryRates of Reaction5070/11 · Oct/Nov 2015 · Q201 Mark

Methanol is made in industry by a reaction between carbon monoxide and hydrogen. CO(g) + 2H2(g) ⇌ CH3OH(g) ΔΗ = −90 kJ/mol The process is usually carried out at a temperature of 400 °C. Which row correctly shows the effect on both the position of the equilibrium and on the rate of the reaction of increasing the temperature to above 400 °C?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Amoves to left, decreases

Bmoves to left, increases

Cmoves to right, decreases

Dmoves to right, increases

✓ Correct answer

B: moves to left, increases

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2015 Paper 1 Variant 1, question 20.

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