Electrochemistry & Redox
60 terms · page 2 of 3
Electrorefining
The purification of a metal by dissolving it from an impure anode and depositing it in pure form at the cathode.
Electrochemistry & RedoxElectrowinning
The extraction of a metal from a solution or molten salt of its ore by electrolysis.
Electrochemistry & RedoxFaraday Constant
The electric charge carried by one mole of electrons.
Electrochemistry & RedoxFaraday's First Law of Electrolysis
The mass of a substance liberated at an electrode is directly proportional to the quantity of electricity passed.
Electrochemistry & RedoxFaraday's Second Law of Electrolysis
When the same quantity of electricity passes through different electrolytes, the masses deposited are proportional to their chemical…
Electrochemistry & RedoxFree Energy and Cell Potential
The relation linking the Gibbs energy change of a cell reaction to the electromotive force it generates.
Electrochemistry & RedoxFuel Cell
An electrochemical cell that generates electricity continuously from a fuel and oxidant supplied from outside.
Electrochemistry & RedoxGalvanic Cell
An electrochemical cell in which a spontaneous redox reaction generates electrical energy.
Electrochemistry & RedoxGalvanic Corrosion
Accelerated corrosion of the more reactive of two different metals in electrical contact within an electrolyte.
Electrochemistry & RedoxGalvanisation
The coating of iron or steel with a layer of zinc to protect it from corrosion.
Electrochemistry & RedoxGlass Electrode
An ion-selective electrode whose thin glass membrane develops a potential proportional to the pH of the solution.
Electrochemistry & RedoxHalf-Reaction
An equation showing either the oxidation or the reduction part of a redox process, including the electrons transferred.
Electrochemistry & RedoxHydrogen–Oxygen Fuel Cell
A fuel cell in which hydrogen is oxidised at the anode and oxygen reduced at the cathode, producing only water.
Electrochemistry & RedoxKohlrausch's Law
At infinite dilution, the molar conductivity of an electrolyte is the sum of independent contributions from its cations and anions.
Electrochemistry & RedoxLead–Acid Accumulator
A rechargeable cell using lead and lead dioxide electrodes in sulfuric acid.
Electrochemistry & RedoxLimiting Molar Conductivity
The molar conductivity of an electrolyte extrapolated to infinite dilution, where ionic interactions vanish.
Electrochemistry & RedoxLithium-Ion Battery
A rechargeable cell in which lithium ions shuttle between a graphite anode and a metal oxide cathode.
Electrochemistry & RedoxMolar Conductivity
The conductivity of a solution divided by the molar concentration of the electrolyte.
Electrochemistry & RedoxNernst Equation
The equation relating a cell's potential to the concentrations of the species involved.
Electrochemistry & RedoxOverpotential
The extra voltage beyond the theoretical value that must be applied before an electrode reaction proceeds at a useful rate.
Electrochemistry & RedoxOxidation
The loss of electrons by a species, accompanied by an increase in its oxidation number.
Electrochemistry & RedoxOxidation Number
The hypothetical charge an atom would carry if all its bonds were treated as fully ionic.
Electrochemistry & RedoxOxidising Agent
A species that accepts electrons from another substance and is itself reduced in the process.
Electrochemistry & RedoxPrimary Cell
A cell in which the electrode reaction is irreversible, so it cannot be recharged.