Electrochemistry Essentials: Galvanic and Electrolytic Cells

What is the role of the reduction potential in electrolytic cells?

• It determines the amount of energy required to drive the non-spontaneous reaction.

• It increases the concentration of the electrolyte solution.

• It decreases the cell potential.

• It is irrelevant to the operation of electrolytic cells.

In a galvanic cell, where does oxidation occur?

• At the anode

• At the cathode

• In the salt bridge

• In the electrolyte solution

Which of the following is a typical characteristic of electrolytes in both galvanic and electrolytic cells?

• They are always solid.

• They must be pure water.

• They contain free ions that conduct electricity.

• They do not participate in the chemical reaction.

How is the cell potential of a galvanic cell calculated?

• By adding the reduction potentials of the anode and cathode

• By subtracting the anode potential from the cathode potential

• By multiplying the standard reduction potentials of the half-cells

• By dividing the anode potential by the cathode potential

What is the primary function of a salt bridge in a galvanic cell?

• To increase the cell potential

• To decrease the cell potential

• To allow the flow of ions and maintain electrical neutrality

• To prevent the mixing of the half-cell solutions

In electrolytic cells, the cathode is characterized by:

• Oxidation

• Reduction

• Neutralization

• Precipitation

Which electrode in a galvanic cell is positive?

• Anode

• Cathode

• Both are equally positive

• Neither, as they are both neutral

The electrolyte composition in a cell affects its:

• Color

• Temperature

• Conductivity

• Shape

• 1 M concentration, 1 atm pressure, and 25°C

• 0 M concentration, 1 atm pressure, and 0°C

• 1 M concentration, 0 atm pressure, and 0°C

• 0 M concentration, 0 atm pressure, and 25°C

What is the purpose of the salt bridge in electrolytic cells?

• To supply additional electrolytes

• To generate electricity

• To prevent the electrodes from touching

• Electrolytic cells do not use a salt bridge