Electrochemical potential

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Electrochemical Potential

Electrochemical potential (pronounced: e-lec-tro-chem-i-cal po-ten-tial) is a measure of the potential energy of a system per unit of electric charge that a particle carries. It is a fundamental concept in electrochemistry, thermodynamics, and physics.

Etymology

The term "electrochemical potential" is derived from the words "electro," which is related to electricity, "chemical," which pertains to chemistry, and "potential," which refers to the capacity for doing work.

Definition

The electrochemical potential is the mechanical work done in bringing 1 mole of ions from a standard state to a specified state, considering both concentration and electric potential differences. It is a form of potential energy that can be harnessed to do work, such as driving a chemical reaction, and is a key factor in the function of electrochemical cells and batteries.

Related Terms

  • Electrochemistry: The branch of chemistry that deals with the chemical changes that cause electrons to move. This movement of electrons is called electricity, which can be generated by movements of electrons from one element to another in a reaction known as an oxidation-reduction, or redox, reaction.
  • Thermodynamics: The study of the relationships between heat, work, and energy.
  • Potential Energy: The energy that a piece of matter has because of its position or nature or because of the arrangement of parts.
  • Electrochemical cells: A device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions.
  • Batteries: A device that produces electricity from energy stored in chemicals.

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