Types of Electrochemical Cells
Voltaic (or galvanic) cell: uses a spontaneous reaction (ēG < 0)
to generate electrical energy.
Electrolytic cell: uses electrical energy to drive a non-spontaneous
reaction (ēG > 0).
Contain two electrodes (anode and cathode) dipped into an
aqueous electrolyte solution.
The oxidation half-reaction occurs at the anode; the reduction
half-reaction occurs at the cathode.
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