Use collision theory to explain why increasing temperature increases the rate of reaction.
From Paper 2, Higher
23 marks
Explain what is meant by dynamic equilibrium.
From Paper 2, Higher
72 marks
60 cm³ of gas was collected in 30 s. Calculate the mean rate of reaction.
From Paper 2, Higher
84 marks
N₂ + 3H₂ ⇌ 2NH₃ (forward reaction exothermic). Explain the effect on the yield of ammonia of increasing pressure and increasing temperature.
From Paper 2, Higher
132 marks
45 cm³ of gas was collected in 25 s. Calculate the mean rate of reaction.
From Paper 2, Higher
143 marks
Explain why the Haber process uses a temperature of about 450 °C.
From Paper 2, Higher
193 marks
Explain how a catalyst increases the rate of a reaction.
From Paper 2, Higher
202 marks
Hydrated copper sulfate is blue; anhydrous copper sulfate is white. Describe what happens when the anhydrous form is added to water and explain the energy change.
From Paper 2, Higher
256 marks
Describe a method to investigate how the concentration of hydrochloric acid affects the rate of reaction with sodium thiosulfate.
From Paper 2, Higher
263 marks
Explain the effect of adding more reactant to a reaction at equilibrium.
Score 0 / 32 · 0 of 10 marked
This paper is written by Plasmo in the style of the AQA GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.
The rate and extent of chemical change Exam Questions: AQA GCSE Chemistry | Plasmo