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Electrochemistry & Redox

13 terms


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Electrochemistry & Redox

Electrochemical Cell

A device in which a redox reaction and an electric current are interconverted through two separated electrodes.

V
Electrochemistry & Redox

Electrochemical Equivalent

The mass of a substance liberated by the passage of one coulomb of charge.

Z = M / (nF) g/C
Electrochemistry & Redox

Electrochemical Series

A list of redox couples arranged in order of their standard electrode potentials.

V
Electrochemistry & Redox

Electrochemistry

The study of the relationship between chemical change and electrical energy.

V
Electrochemistry & Redox

Electrode

A conductor through which electric current enters or leaves an electrolyte.

Dimensionless
Electrochemistry & Redox

Electrolysis

The decomposition of an electrolyte by passing an electric current through it.

C
Electrochemistry & Redox

Electrolyte

A substance that produces mobile ions when dissolved or molten and therefore conducts electricity.

S/m
Electrochemistry & Redox

Electrolytic Cell

An electrochemical cell in which an external electrical supply drives a non-spontaneous redox reaction.

E°cell < 0 V
Electrochemistry & Redox

Electrolytic Conductivity

The ability of an electrolyte solution to conduct electric current, equal to the reciprocal of its resistivity.

κ = (1/R)(l/A) S/m
Electrochemistry & Redox

Electromotive Force

The maximum potential difference a cell can produce, measured when no current is being drawn.

emf = E_cathode − E_anode V
Electrochemistry & Redox

Electroplating

The deposition of a thin metal coating onto a conducting surface by electrolysis.

g
Electrochemistry & Redox

Electrorefining

The purification of a metal by dissolving it from an impure anode and depositing it in pure form at the cathode.

Dimensionless
Electrochemistry & Redox

Electrowinning

The extraction of a metal from a solution or molten salt of its ore by electrolysis.

kWh/kg