The Concept of Coredox Reaction

Eleven sets of organic and inorganic coloured reduction-oxidation (coredox) reactions (organic and inorganic chemical reactions that can show change in colour brightness after undergo redox reaction) were used during these research findings. All were carried out under suitable condition in order to see if the compounds that exist as coloured compounds before reaction, after reaction or both will become brighter or darker when undergo reduction or oxidation respectively. Six sets of this reaction type which include both organic and inorganic species showed special results. In which, all the targeted species gained electrons, their oxidation number decreased in positive direction and colour of species became brighter after reaction by increased in colour brightness. While in last five sets, which also include both organic and inorganic species showed their own results in which all the targeted species donated electrons, their oxidation number increased in positive direction, colour of species became darker after reaction by decreased in colour brightness. Series and repeated number of observations (more than 20 times) were made before recording any changed in colour brightness. Therefore, for all pure form of chemical species that can undergo any one of the coloured reduction-oxidation (coredox) reaction, brightness formation of the product after reaction implies reduction while darkness, oxidation.