Electrochemistry & Redox
60 terms · page 3 of 3
Redox Couple
The oxidised and reduced forms of the same species, considered together as a conjugate pair.
Electrochemistry & RedoxReducing Agent
A species that donates electrons to another substance and is itself oxidised in the process.
Electrochemistry & RedoxReduction
The gain of electrons by a species, accompanied by a decrease in its oxidation number.
Electrochemistry & RedoxReference Electrode
A half-cell with a stable, known and reproducible potential, used as a fixed point against which other potentials are measured.
Electrochemistry & RedoxRusting
The corrosion of iron in the presence of both oxygen and water to form hydrated iron(III) oxide.
Electrochemistry & RedoxSacrificial Anode
A block of reactive metal attached to a structure so that it corrodes preferentially and protects the structure.
Electrochemistry & RedoxSalt Bridge
A conducting connection between the two half-cells of a galvanic cell that completes the circuit and maintains electrical neutrality.
Electrochemistry & RedoxSecondary Cell
A cell whose reaction can be reversed by an applied current, allowing it to be recharged and reused.
Electrochemistry & RedoxSelective Discharge
The preferential reaction of one ion over others at an electrode during electrolysis.
Electrochemistry & RedoxStandard Electrode Potential
The potential of a half-cell measured against the standard hydrogen electrode under standard conditions.
Electrochemistry & RedoxStandard Hydrogen Electrode
The reference half-cell, consisting of hydrogen gas at 1 bar bubbled over platinum in 1 M acid, assigned a potential of exactly zero.
Electrochemistry & RedoxTransport Number
The fraction of the total current carried by a particular ion in an electrolyte solution.