S'identifier

Chapitre 18

Electrochimie

Équilibrer une réaction d'oxydoréduction
Équilibrer une réaction d'oxydoréduction
Electrochemistry is the science involved in the interconversion of electrical and chemical reactions. Such reactions are called reduction-oxidation, or ...
Force électromotrice
Force électromotrice
Electricity is generated by either electrons or ions flowing through a solution or a conducting medium. This flow of electrons or specifically electrical ...
Piles électrochimiques
Piles électrochimiques
Spontaneous Chemical Reactions Spontaneous redox reactions occur abundantly in nature. The chemical reaction occurring in a disposable AA battery powering ...
Potentiels d'oxydoréduction
Potentiels d'oxydoréduction
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox ...
Différence de potentiel et enthalpie libre
Différence de potentiel et enthalpie libre
Thermodynamics of a Redox Reaction Thermodynamics is the branch of physics dealing with the relationship between heat and other forms of energy. In an ...
L'équation de Nernst
L'équation de Nernst
Nonstandard Reaction Conditions The interconnection between standard cell potentials and various thermodynamic parameters such as the standard free energy ...
Piles de concentration
Piles de concentration
A concentration cell is a type of a  voltaic cell constructed by connecting two almost identical half-cells, both based on the same half-reaction and ...
Batteries et piles à combustible
Batteries et piles à combustible
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to ...
Corrosion
Corrosion
The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green ...
Électrolyse
Électrolyse
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are ...
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