Question detail

Explain how the choice of electrolyte influences the voltage produced by a simple cell.

Try the question, check the answer, then read the explanation to understand the curriculum point.

At a glance

Question

Type

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Style

Topic

Chemical cells and fuel cells (chemistry only)

Question

Explain how the choice of electrolyte influences the voltage produced by a simple cell.

Answer

The electrolyte supplies ions that balance charge during the redox reactions at the electrodes. Its ionic strength, concentration, and the specific ions present affect the cell’s internal resistance and the electrode potentials. A more conductive electrolyte with suitable ions will reduce internal resistance and allow the cell to achieve a voltage closer to the theoretical electrode potential difference.

Explanation

This answer tests the student’s ability to apply knowledge of electrochemical principles to explain voltage dependence on electrolyte properties, matching the learning objective.

Common mistake

Misunderstanding Simple Cells

Students often describe a simple cell as just two metals without mentioning the electrolyte.

Emphasize that a simple cell consists of two different metals in contact with an electrolyte, which is essential for the chemical reaction to produce electricity.

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