In this question, all pressures are measured in atm. The equation represents the equilibrium between three gaseous substances X, Y and Z. X + 3Y ⇋ 2Z At temperature T₁, the numerical value of Kp, the equilibrium constant, is 2. At a higher temperature T2, the partial pressures at equilibrium are as shown. Which row is correct?
✓ Correct Answer
The correct answer is D: the numerical value of Kp at T2: 25/54, the forward reaction is: exothermic
📋 Examiner Report & Trap Analysis
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...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep