24. Which of the following statements concerning potentiometry is INCORRECT?
(A) In a pH meter, the pH is determined by measuring the absolute electrical potential of an indicator electrode
(B) The pH electrode uses a thin glass membrane that allows H⁺ ions to pass through
(C) Potentiometric measurements are based on a two-electrode configuration consisting of an indicator electrode and a reference electrode.
(D) A high-impedance voltmeter is required to avoid drawing current during potentiometric measurements.
(E) The reference electrode provides a stable and reproducible potential.