A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation represents the species that gains electrons, and the other represents the species that loses electrons.

Generally, the thermodynamics of a reaction is expressed in terms of the change in Gibbs free energy (ΔG), which is a function of concentrations of reactants and products. However, the thermodynamics of a redox reaction is expressed in terms of electrochemical potential (E) and the Nernst equation, as the reaction involves the movement of electrons. The Nernst Equation expresses the relationship between the electrochemical potential and the concentrations of the reactants and products.

Tags
Redox ReactionReduction oxidationReducing AgentOxidizing AgentHalf reactionsGibbs Free EnergyElectrochemical PotentialNernst EquationElectron TransferThermodynamics

Do Capítulo 2:

article

Now Playing

2.17 : Redox Equilibria: Overview

Chemical Equilibria

393 Visualizações

article

2.1 : Ionic Strength: Overview

Chemical Equilibria

1.0K Visualizações

article

2.2 : Ionic Strength: Effects on Chemical Equilibria

Chemical Equilibria

1.1K Visualizações

article

2.3 : Thermodynamics: Chemical Potential and Activity

Chemical Equilibria

727 Visualizações

article

2.4 : Thermodynamics: Activity Coefficient

Chemical Equilibria

1.1K Visualizações

article

2.5 : Chemical Equilibria: Redefining Equilibrium Constant

Chemical Equilibria

442 Visualizações

article

2.6 : Factors Affecting Activity Coefficient

Chemical Equilibria

612 Visualizações

article

2.7 : Chemical Equilibria: Systematic Approach to Equilibrium Calculations

Chemical Equilibria

511 Visualizações

article

2.8 : Acid–Base Equilibria: Activity-Based Definition of pH

Chemical Equilibria

470 Visualizações

article

2.9 : Ladder Diagrams: Acid–Base Equilibria

Chemical Equilibria

370 Visualizações

article

2.10 : Ladder Diagrams: Redox Equilibria

Chemical Equilibria

372 Visualizações

article

2.11 : Ladder Diagrams: Complexation Equilibria

Chemical Equilibria

276 Visualizações

article

2.12 : Solubility Equilibria: Overview

Chemical Equilibria

472 Visualizações

article

2.13 : Solubility Equilibria: Ionic Product of Water

Chemical Equilibria

852 Visualizações

article

2.14 : Complexation Equilibria: Overview

Chemical Equilibria

478 Visualizações

See More

JoVE Logo

Privacidade

Termos de uso

Políticas

Pesquisa

Educação

SOBRE A JoVE

Copyright © 2025 MyJoVE Corporation. Todos os direitos reservados