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Combustion reactions, stoichiometry, and redox reactions are some of the basic contents in chemistry curriculum. Although the counting of transferred electrons is critical in redox reactions, assigning mean oxidation number of organic carbons (ONc) is not always easy. Even though the relationship between the oxidative ratio (OR) and ONc is known, the relationship between the number of transferred electrons (Te − ) and OR has not been thoroughly studied. The H-atom method has already been developed to balance and deduct organic combustion reactions. It can be used further to help establish the relationships among the stoichiometric coefficients (SC), the number of transferred hydrogens (TH), and Te − . This article uses the procedures of the H-atom method for balancing and deducting, and the known relationships among SC, TH, and Te −  for exploring the relationships among SC, Te − , ONc, and OR in organic combustion reactions. By integrating three sets of relationships: (i) SC and Te − , (ii) Te −  and ON, and (iii) SC and OR, the interconversions among SC, Te − , ONc, and OR can be mathematically formulated. Furthermore, Te − , ONc, and OR can be assigned by SC and the general molecular formula of C x H y O z X w .

chemistry teacher international

Exploring the relationships among stoichiometric coefficients, number of transferred electrons, mean oxidation number of carbons, and oxidative ratio in organic combustion reactions