AP CHEMISTRY- Electrochemistry Quiz

What is the main difference between a galvanic cell and an electrolytic cell?

• A galvanic cell converts chemical energy into electrical energy, while an electrolytic cell does the opposite.

• A galvanic cell requires an external power source, while an electrolytic cell does not.

• A galvanic cell can only operate under standard conditions, while an electrolytic cell can operate under any conditions.

• A galvanic cell uses only nonmetals, while an electrolytic cell uses only metals.

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In a lemon battery experiment, which electrode is the anode?

• The electrode where oxidation occurs.

• The electrode where reduction occurs.

• The electrode with the higher potential.

• The electrode with the lower potential.

What is the standard electrode potential of hydrogen in electrochemistry?

• 0.00 V

• 1.00 V

• -1.00 V

• 0.50 V

Which of the following is a correct representation of Faraday's first law of electrolysis?

• The amount of substance deposited at an electrode is directly proportional to the charge passed through the electrolyte.

• The amount of substance deposited at an electrode is inversely proportional to the charge passed through the electrolyte.

• The amount of substance deposited at an electrode is directly proportional to the square of the charge passed through the electrolyte.

• The amount of substance deposited at an electrode is independent of the charge passed through the electrolyte.

What is the main cause of corrosion in metals?

• Exposure to high temperatures

• Mechanical stress

• Chemical reactions with environmental substances

• Exposure to ultraviolet light

In a redox reaction, what happens to the oxidizing agent?

• It gains electrons and is reduced.

• It loses electrons and is oxidized.

• It donates protons.

• It accepts protons.

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What is the purpose of the salt bridge in a galvanic cell?

• To increase the voltage of the cell

• To prevent the mixing of the solutions in the two half-cells

• To allow the flow of ions and maintain electrical neutrality

• To act as a secondary power source

Which of the following is an example of an electrolytic cell?

• A lemon battery

• A zinc-carbon battery

• Electroplating silver onto a spoon

• A potato clock

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What does the Nernst equation allow you to calculate?

• The equilibrium constant for a chemical reaction

• The cell potential under non-standard conditions

• The rate of an electrochemical reaction

• The amount of energy required to start a reaction

Which law states that the mass of a substance produced at an electrode during electrolysis is proportional to the number of moles of electrons transferred at that electrode?

• Coulomb's law

• Faraday's first law of electrolysis

• Faraday's second law of electrolysis

• Ohm's law