A-LevelChemistryReaction kineticsMay/June 2010Paper 1 Q101 Mark
The Haber process for the manufacture of ammonia is represented by the following equation. N2(g) + 3H2(g) ⇌ 2NH3(g) ΔΗ = −92 kJ mol⁻¹ Which statement is correct about this reaction when the temperature is increased?
ABoth forward and backward rates increase.
BThe backward rate only increases.
CThe forward rate only increases.
DThere is no effect on the backward or forward rate.
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of reaction kinetics within the Chemistrysyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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