Unit 3 AOS 2 - Electrolytic Cells Quiz (3A)

What is the main process occurring in an electrolytic cell?

• Chemical energy is converted into electrical energy.

• Electrical energy is converted into chemical energy.

• Thermal energy is converted into chemical energy.

• Mechanical energy is converted into electrical energy.

Which of Faraday's laws states that the amount of substance deposited at an electrode is proportional to the amount of electricity used?

• Faraday's first law of electrolysis

• Faraday's second law of electrolysis

• Ohm's law

• Coulomb's law

During the electrolysis of water, what is the half equation at the cathode?

What is the half equation for the oxidation process at the anode during the electrolysis of molten sodium chloride?

Which of the following is a commercial application of electrolytic cells?

• Alkaline batteries

• Electroplating

• Fuel cells

• Solar cells

In the context of lithium-ion batteries, what role does the electrolyte play?

• It acts as a physical barrier between the anode and cathode.

• It provides the electrons for the redox reactions.

• It allows the movement of ions between the anode and cathode.

• It stores the electrical energy.

What is the main difference between galvanic cells and electrolytic cells?

• Galvanic cells require an external power source, while electrolytic cells do not.

• Electrolytic cells require an external power source, while galvanic cells do not.

• Galvanic cells can only operate under acidic conditions.

• Electrolytic cells can only operate under basic conditions.

What is the product at the cathode during the electrolysis of molten potassium chloride?

• Potassium

• Chlorine

• Hydrogen

• Oxygen

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

• The amounts of different substances liberated by the same quantity of electricity are proportional to their chemical equivalent weights.

• The amount of substance deposited at an electrode is directly proportional to the current applied.

• The efficiency of electrolysis increases with the increase in temperature.

• The amount of energy required for electrolysis decreases with the increase in the concentration of the electrolyte.

What is the primary advantage of using lithium-ion batteries in portable electronics?

• They have a high energy density.

• They are cheaper than other types of batteries.

• They can be easily disposed of in regular trash.

• They can be fully charged in less than 10 minutes.