How to determine cathode and anode in half reactions?
Understand the Problem
The question is asking how to identify the cathode and anode in half-reactions, which involves understanding oxidation and reduction processes in electrochemistry. The cathode is where reduction occurs, while the anode is where oxidation takes place.
Answer
Oxidation at anode (left), reduction at cathode (right).
To determine cathode and anode in half reactions, recognize that oxidation occurs at the anode (left of || in cell notation) and reduction occurs at the cathode (right of || in cell notation).
Answer for screen readers
To determine cathode and anode in half reactions, recognize that oxidation occurs at the anode (left of || in cell notation) and reduction occurs at the cathode (right of || in cell notation).
More Information
The anode is where oxidation happens (loss of electrons), and the cathode is where reduction takes place (gain of electrons). In voltaic cells, electrons flow from anode to cathode.
Tips
A common mistake is to confuse oxidation and reduction locations. Remember: 'an ox' (anode oxidation) and 'red cat' (reduction at cathode).
Sources
- Basics of Electrochemistry - chem.libretexts.org
- Anode vs. Cathode in Electrochemical Cells - study.com
