Swimming pool water can be kept free of harmful bacteria by adding aqueous sodium chlorate(I), NaOCl. This reacts with water to produce HOCl molecules which kill bacteria. OCl⁻(aq) + H2O ⇌ OH⁻(aq) + HOCl(aq) In bright sunshine, the OCl⁻ ion is broken down by ultra-violet light. OCl⁻(aq) + uv light → Cl⁻(aq) + ½O2(g) Which method would maintain the highest concentration of HOCl(aq)?

In an experiment, 2.00 mol of hydrogen and 3.00 mol of iodine were heated together in a sealed container and allowed …

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Which compound gives both: an orange precipitate with 2,4-DNPH reagent and a yellow precipitate with alkaline I₂(aq)?