AP Chemistry 9.8: Electrochemical Cells

Practice AP Chemistry questions on relating cell components to galvanic or electrolytic operation, half-reactions, electron flow, and ion movement.

Exam points

Identify oxidation at the anode and reduction at the cathode in galvanic and electrolytic cells.
Explain how electrodes, solutions, salt bridges, and measuring devices maintain charge balance and cell operation.
Predict electron flow, electrode mass changes, gas formation, and salt-bridge ion migration from cell diagrams.

[Maximum number: 1]

Answer the following questions related to manganese compounds.

Another compound of manganese, $\mathrm{MnO}_{2}$ , is used in alkaline batteries, represented by the following diagram. Some half-reactions are given in the table.

Figure for Question 9.8.A—Explain the relationship between the physical components of an electrochemical cell and the overall operational… question 1 — AP Chemistry

Table for Question 9.8.A—Explain the relationship between the physical components of an electrochemical cell and the overall operational… question 1 — AP Chemistry

A student claims that the total mass of an alkaline battery decreases as the battery operates because the anode loses mass. Do you agree with the student's claim? Justify your answer.

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9.8.A—Explain the relationship between the physical components of an electrochemical cell and the overall operational… question 1