Electrochemistry Basics - Advanced Concepts for Exams

Electrochemistry Basics - Advanced Concepts

Q. In a concentration cell, the cell potential is dependent on:

Solution

In a concentration cell, the cell potential is dependent on the concentration differences of the reactants.

Correct Answer: B — Concentration differences

Q. In a concentration cell, the cell potential is generated due to:

Solution

In a concentration cell, the cell potential is generated due to differences in ion concentrations.

Correct Answer: B — Different concentrations

Q. In electrochemical cells, what is the role of the cathode?

Solution

The cathode is the site of reduction in electrochemical cells.

Correct Answer: B — Site of reduction

Q. In electrochemistry, what does the term 'Faradaic current' refer to?

Solution

Faradaic current refers to the current associated with redox reactions occurring at the electrode surface.

Correct Answer: C — Current associated with redox reactions

Q. What does the term 'overpotential' refer to in electrochemistry?

Solution

Overpotential refers to the extra potential required to drive an electrochemical reaction beyond its equilibrium potential.

Correct Answer: A — The potential difference required to drive a reaction

Q. What is the primary function of a salt bridge in an electrochemical cell?

Solution

The primary function of a salt bridge is to maintain charge balance by allowing ions to flow between the half-cells.

Correct Answer: B — To maintain charge balance

Q. Which of the following is a primary factor affecting the rate of an electrochemical reaction?

Solution

All of the above factors—temperature, pressure, and concentration—affect the rate of an electrochemical reaction.

Correct Answer: D — All of the above

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