- 著者
-
仁宮 章夫
村岡 賢
- 出版者
- 一般社団法人 日本科学教育学会
- 雑誌
- 科学教育研究 (ISSN:03864553)
- 巻号頁・発行日
- vol.42, no.3, pp.225-230, 2018 (Released:2018-10-27)
- 参考文献数
- 12
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.