In a galvanic cell, the cathode is the site of reduction reactions.
Electrons flow toward the cathode from the anode.
The cathode is typically marked as the positive terminal in a galvanic cell.
Reduction at the cathode means that a species gains electrons.
Common examples of reduction reactions at the cathode include $\text{Cu}^{2+} + 2e^{-} \rightarrow \text{Cu}$ and $\text{Ag}^{+} + e^{-} \rightarrow \text{Ag}$.
Review Questions
What type of reaction occurs at the cathode in a galvanic cell?
In which direction do electrons flow relative to the cathode?
How is the terminal of a cathode typically marked in a galvanic cell?
Related terms
Anode: The electrode where oxidation occurs; it is the negative terminal in a galvanic cell.
Reduction: A chemical reaction that involves gaining electrons.
Electrolyte: A substance containing free ions that make it electrically conductive, used to allow ion flow between electrodes.