An oxidation-reduction (redox) reaction is a type of chemical reaction that involves a transfer of electrons between two species.
An oxidation-reduction reaction is any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron. Redox reactions are common and vital to some of the basic functions of life, including photosynthesis, respiration, combustion, and corrosion or rusting.
C + 6NaOH → 3H2 + 2Na + 2Na2CO3
Phương trình số #2
2H2O + 2K + CuSO4 → Cu(OH)2 + H2 + K2SO4
Phương trình số #3
8H2SO4 + 2KMnO4 + 10NaBr → 5Br2 + 8H2O + 2MnSO4 + 5Na2SO4 + K2SO4