Two experiments use the same mass of zinc and the same volume of the same dilute acid. Experiment 2 is carried out at a higher temperature. How do the two curves of volume of gas against time compare?
Experiment 2 is steeper at first and ends at a higher volume
Experiment 2 is less steep at first and ends at a higher volume
Experiment 2 is steeper at first and ends at the same volume
Experiment 2 is less steep at first and ends at the same volume
41 exam-style questions on AQA GCSE Chemistry 6.1 Rate of reaction, covering 6.1.1a Calculating rates of reactions, 6.1.1b Gradient of a tangent as rate, 6.1.2 Factors which affect the rates of chemical reactions, 6.1.3 Collision theory and activation energy, and 6.1.4 Catalysts. Each one has a worked solution and a mark scheme showing where the marks go.