Note 27 — EXPERIMENTS
Reading edition
Bleaching powder is prepared by passing chlorine gas over layers of slaked lime (lime to which a slight amount of water has been added). Bleaching powder bleaches by having its hypochlorous acid set free, which in turn gives up oxygen, being converted into hydrochloric acid. The French use solutions containing chloride and hypochlorite of soda. They are called Labarraque’s disinfecting fluid. A similar solution of a mixture of chloride and hypochlorite is called Eau de Javelle.