A-LevelChemistryReaction kineticsOct/Nov 2016Paper 1 Q341 Mark
Methanol, CH₃OH, can be produced industrially by reacting CO with H₂. CO(g) + 2H₂(g) ⇌ CH₃OH(g) ∆H = −91 kJ mol⁻¹ The process can be carried out at 4 × 10³ kPa and 1150 K. Which statements about this reaction are correct? 1 Increasing the temperature will increase the rate of reaction because more effective collisions will occur. 2 Lowering the temperature will reduce the rate of reaction because the forward reaction is exothermic. 3 Increasing the pressure will reduce the rate of reaction because there are a larger number of moles on the left-hand side of the equation.
A1, 2 and 3 are correct
B1 and 2 only are correct
C2 and 3 only are correct
D1 only is correct
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The correct answer is D. This question tests the candidate's understanding of reaction kinetics within the Chemistrysyllabus. The examiner's mark scheme requires...
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