Water, acidified with dilute sulfuric acid, undergoes electrolysis. This process decomposes water to produce hydrogen at the negative electrode and oxygen at the positive electrode.
A student collects a sample of the gas produced at the positive electrode and inserts a glowing wooden splint into the test tube.
State what would be observed.
83 exam-style questions on Edexcel GCSE Chemistry 4.2 Electrolytic processes, covering 4.2.1 Electrolytes and the process of electrolysis, 4.2.2 Products of electrolysis using inert electrodes, 4.2.3 Half equations, oxidation and reduction in electrolysis, and 4.2.4 Electrolysis of copper sulfate and purifying copper. Each one has a worked solution and a mark scheme showing where the marks go.