Question

.......... type of electrochemical detection measures the electric current associated with the electron transfer involved in redox processes whereas ............ type of electrochemical detection measures conductance or capacitance changes associated with changes in the overall ionic medium between the two electrodes.

• A. Amperometry, potentiometry
• B. Potentiometry, impedance spectroscopy
• C. Amperometry, impedance spectroscopy
• D. Potentiometry, amperometry

Hint:

Understand the difference between amperometry (current-based) and potentiometry (voltage-based) to use the right technique for electrochemical detection.

Answer 1

The Correct Option is A

Step 1: Amperometry detection.
Amperometry measures the electric current produced by electron transfer reactions during redox processes.

Step 2: Potentiometry detection.
Potentiometry detects changes in the potential difference between electrodes and is used to measure the concentration of ions, often via changes in the ionic medium.

Final Answer: \[ \boxed{\text{Amperometry, Potentiometry}} \]