Testing for chlorine
Testing for chlorine
Chlorine is tested using damp blue litmus paper. The paper must be damp so that chlorine can dissolve before reacting.
Step-by-step lessons on Edexcel GCSE Chemistry 7.2.2 Reactions of the halogens. Each one builds up to exam-style questions. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.