Redox Chemistry: Half Reactions and Predominance Domains

This lecture covers the fundamentals of redox chemistry, including half redox reactions, computation of standard redox potential, and predominance domains in pe-pH diagrams. It explains how to determine which species reduce each other and the importance of redox conditions in natural systems. The lecture also delves into the lack of equilibrium in redox reactions, the construction of pe-pH diagrams, and the significance of water boundaries in these diagrams. Additionally, it discusses the relationship between Fe(II)/Fe(III) and Mn(II)/Mn(III) species in redox reactions and provides insights on how to interpret pe-pH diagrams. The key takeaway emphasizes the importance of understanding redox half reactions, the analogy between pH and pe, and the limitations imposed by the water stability domain.