May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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38Practical Techniques SafetyMedium1 mark
Magnesium reacts with dilute hydrochloric acid to produce hydrogen gas. Which pieces of apparatus are needed to determine the rate of this reaction?
four pieces of apparatus numbered 1 to 4: 1 a gas syringe, 2 a digital stopwatch reading 00:00, 3 a clamped measuring cylinder inverted over a delivery tube, 4 a tripod stand