Question detail
Which of the following factors can affect the cell potential of an electrochemical cell?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrode potentials and electrochemical cells (A-level only)
Question
- A. All of the above.
- B. Temperature and concentration of reactants.
- C. The type of electrodes used.
- D. The surface area of the electrodes.
Answer
All of the above.
Explanation
The correct option is All of the above.. All of the above. is the best answer because it directly supports the AQA A-Level Chemistry objective to set up and interpret electrochemical cell diagrams. This reasoning is anchored to Standard electrode potentials (A-level only) in Electrode potentials and electrochemical cells (A-level only), and it separates electrochemical cell from similar A-Level ideas rather than relying on a vague recall statement. Other options are weaker if they use the wrong evidence, calculation, mechanism, observation, unit, or conclusion for this subtopic.
Common mistake
Misinterpreting Cell Diagrams
Students often confuse the anode and cathode in electrochemical cell diagrams, labeling them incorrectly.
To fix this, remember that the anode is where oxidation occurs (negative electrode) and the cathode is where reduction occurs (positive electrode). Always check the flow of electrons from anode to cathode to confirm their identities. Keep the correction anchored to Standard electrode potentials (A-level only) and the objective: Set up and interpret electrochemical cell diagrams.
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