During an investigation into the reactions of acids, a student adds a strip of magnesium ribbon to a beaker containing dilute sulfuric acid. A colourless gas is evolved, which is collected in an inverted test tube.
The student tests this gas by holding a burning splint near the mouth of the test tube.
State what would be observed.
276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.