Electrode Potential - Potential Difference of A Cell Assembled of Two Electrodes

Potential Difference of A Cell Assembled of Two Electrodes

See also: Galvanic cell#Cell voltage, Electrochemical cell#Cell potential, and Electrolytic cell#Anode and cathode definitions depend on charge and discharge

Potential of a cell assembled of two electrodes can be determined from the two individual electrode potentials using:

ΔVcell = Ered,cathode - Ered,anode

or, equivalently,

ΔVcell = Ered,cathode + Eoxy,anode

This follows from the IUPAC definition of the electric potential difference of a galvanic cell, according to which the electric potential difference of a cell is the difference of the potentials of the electrodes on the right and the left of the galvanic cell. When ΔVcell is positive, then positive electrical charge flows through the cell from the left electrode (anode) to the right electrode (cathode).

Read more about this topic:  Electrode Potential

Famous quotes containing the words potential, difference, cell and/or assembled:

    “The germ of violence is laid bare in the child abuser by the sheer accident of his individual experience ... in a word, to a greater degree than we like to admit, we are all potential child abusers.”
    —F. Gonzalez-Crussi, Mexican professor of pathology, author. “Reflections on Child Abuse,” Notes of an Anatomist (1985)

    “There is a difference between twenty-nine and thirty. When you are twenty-nine it can be the beginning of everything. When you are thirty it can be the end of everything.”
    —Gertrude Stein (1874–1946)

    “A cell for prayer, a hall for joy,—
    They treated nature as they would.”
    —Ralph Waldo Emerson (1803–1882)

    “According to the historian, they escaped as by a miracle all roving bands of Indians, and reached their homes in safety, with their trophies, for which the General Court paid them fifty pounds. The family of Hannah Dustan all assembled alive once more, except the infant whose brains were dashed out against the apple tree, and there have been many who in later time have lived to say that they have eaten of the fruit of that apple tree.”
    —Henry David Thoreau (1817–1862)