2018 Volume 42 Issue 3 Pages 225-230
The reaction of two compounds, hypochlorous acid and a mixture of hydrogen peroxide and sulfuric acid, was investigated by applying them to the surface of copper plates, respectively. Hypochlorous acid was produced using two methods. The first hypochlorous acid was prepared by adding one drop of hydrochloric acid to a bleach solution containing sodium hypochlorite. The second hypochlorous acid was prepared through chlorine gas. Through X-ray analysis, the black substance produced by adding one drop to a bleach solution was identified as copper(II) oxide, whereas copper(I) chloride was also found on the copper. The black substance found on the copper plate from the mixture of hydrogen peroxide and sulfuric acid was assumed to be copper(II) oxide by chemical analysis.
