Grade 12Physical Chemistry
What is meant by Electrode Potential?
What is meant by Electrode Potential?
1 Answer
prashant mourya
Approved Tutor Answer14 Years agoElectrode potential, E, in electrochemistry according to an IUPAC definition, is the electromotive force of a cell built of two electrodes:
- on the left-hand side is the standard hydrogen electrode, and
- on the right-hand side is the electrode the potential of which is being defined.
By convention:
- ECell := ECathode − EAnode
From the above, for the cell with the standard hydrogen electrode (potential of 0 by convention), one obtains:
- ECell = ERight − 0 = EElectrode
The left-right convention is consistent with the international agreement that redox potentials be given for reactions written in the form of reduction half-reactions.
Electrode potential is measured in volts (V).
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