The potentiometric measurement of fluoride (F^-) with an ion-selective electrode

Question

The potentiometric measurement of fluoride (F^-) with an ion-selective electrode is performed by (A) measuring the variation in ionic strength of a series of F^- solutions. (B) integrating the current through the ISE and obtaining the concentration from a calibration plot. (C) measuring the potential of the ISE relative to the reference and calculating the concentration from the Nernst equation. (D) measuring the potential of the ISE relative to the reference and obtaining the concentration from a calibration plot.

Explanation / Answer

Answer 34.

C. Measuring the potential of the ISE relative to the reference and calculating the concentration from the Nernst equation.

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