During a rate experiment, a student adds magnesium ribbon to dilute hydrochloric acid. Bubbles pass through a delivery tube, and the gas is collected in an upturned measuring cylinder over water.
Name this gas.
Describe how its identity can be confirmed.
122 exam-style questions on OCR GCSE Chemistry 5.2 Controlling reactions, covering 5.2.1 Measuring and interpreting rate of reaction, 5.2.2 Factors affecting rate and collision theory, and 5.2.3 Catalysts, activation energy and enzymes. Each one has a worked solution and a mark scheme showing where the marks go.