A group of students investigates the rate of reaction between calcium carbonate chips and dilute hydrochloric acid.
A student suggests four different changes to the experimental setup. Which change would successfully increase the rate of this reaction?
Use a larger delivery tube to connect the flask to the gas syringe.
Use the same volume of hydrochloric acid but at a higher dilution.
Use a larger conical flask to carry out the reaction.
Use the same mass of calcium carbonate but in a finely powdered form.
127 exam-style questions on Edexcel GCSE Chemistry 8.1 Rates of reaction, covering 8.1.1 Measuring and interpreting rates of reaction, 8.1.2 Collision theory and the factors affecting rate, and 8.1.3 Catalysts and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.