A technician collects a gas sample from a sealed archive and checks whether it contains carbon dioxide.
Name the solution the technician should use.
State how the technician should use the gas sample with this solution.
89 exam-style questions on AQA GCSE Chemistry 8.2 Identification of common gases, covering 8.2.1 Test for hydrogen, 8.2.2 Test for oxygen, 8.2.3 Test for carbon dioxide, and 8.2.4 Test for chlorine. Each one has a worked solution and a mark scheme showing where the marks go.