From Paper 1: Advanced Inorganic and Physical Chemistry
8(a)4 marks
1.00 mol of ethanoic acid and 1.00 mol of ethanol were mixed with a little acid catalyst. At equilibrium 0.67 mol of ethyl ethanoate was present. Calculate Kc.
From Paper 1: Advanced Inorganic and Physical Chemistry
8(b)2 marks
Explain why adding more ethanol increases the yield of ester but does not change Kc.
From Paper 2: Advanced Organic and Physical Chemistry
116 marks
For 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), ΔH = −197 kJ mol⁻¹. Explain the effect on the equilibrium yield and on Kp of (a) increasing the pressure and (b) increasing the temperature.
From Paper 3: General and Practical Principles in Chemistry
5(b)4 marks
At equilibrium the partial pressures are p(CO) = 20 atm, p(H₂) = 40 atm, p(CH₃OH) = 15 atm. Calculate Kp with units.
From Paper 3: General and Practical Principles in Chemistry
7(b)4 marks
N₂O₄ is colourless and NO₂ is brown. Predict and explain what you would see when a sealed tube of the equilibrium mixture is placed in hot water.
Score 0 / 20 · 0 of 5 marked
This paper is written by Plasmo in the style of the Edexcel A-Level Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.
Equilibrium II Exam Questions: Edexcel A-Level Chemistry | Plasmo