Are combination reactions also redox reactions?
Combination reactions can be redox reactions.
The single elements in the reactants will have oxidation numbers of 0. Once they are in a compound, they will have different oxidation numbers. Not all combination reactions are redox reactions. If all the reactants are compounds, then they will not be redox reactions. For example: CaO + SO2 --> CaSO3
Which of the following statements about the redox reactions of the electron transport chain is correct?
Redox reactions are divided into two main types. (i) Inter molecular Redox: In such redox reactions, one molecule of reactant is oxidized whereas molecule of other reactant is reduced. (ii)Intra molecular Redox: One atom of a molecule is oxidized and other atom of same molecule is reduced then it is intramolecular redox reaction. e.g., 2Mn2O7 4MnO2 + 3O2.