An electrochemical reaction is characterized using EIS. In the first experiment, the solution resistance is made negligible by the addition of supporting electrolyte. In the second experiment, the solution resistance is large, due to a lack of supporting electrolyte. All other conditions remain the same. The latter case will differ from the former A) only in Z_Re, B) only in Z_Im C) in both Z_Re and Z_Im D) will not be different.

Question

Quizplus · Accepted Answer

Both the real and imaginary components of the impedance (Z_Re and Z_Im) will be different in the second experiment with high solution resistance. This is because the solution resistance affects the conductivity of the solution, which in turn affects the impedance measurements. Therefore, both real and imaginary components of the impedance will be affected.

An Electrochemical Reaction Is Characterized Using EIS