Which statement below is not true for a liquid-membrane based ion-selective electrode? ● A. Two reference electrodes measure the voltage difference across the ion-selective electrode organic polymer membrane. B. The organic polymer membrane separates the inner solution from the outer analyte solution. C. The organic polymer membrane is hydrophobic and is impregnated with a viscous organic solution containing an ion exchanger and sometimes a ligand specific for the analyte ion. O D. The potential difference across the organic polymer membrane occurs when the analyte ions embedded in the membrane diffuse into the inner aqueous solution creating a junction potential. O E. The potential difference is dependent only on the activity of anallyte ion in the outer solution.

Which statement below is not true for a liquid-membrane based ion-selective electrode? ● A. Two reference electrodes measure the voltage difference across the ion-selective electrode organic polymer membrane. B. The organic polymer membrane separates the inner solution from the outer analyte solution. C. The organic polymer membrane is hydrophobic and is impregnated with a viscous organic solution containing an ion exchanger and sometimes a ligand specific for the analyte ion. O D. The potential difference across the organic polymer membrane occurs when the analyte ions embedded in the membrane diffuse into the inner aqueous solution creating a junction potential. O E. The potential difference is dependent only on the activity of anallyte ion in the outer solution.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

Which statement below is not true for a liquid-membrane based ion-selective electrode?
●
●
A. Two reference electrodes measure the voltage difference across the ion-selective electrode organic polymer membrane.
B. The organic polymer membrane separates the inner solution from the outer analyte solution.
C. The organic polymer membrane is hydrophobic and is impregnated with a viscous organic solution containing an ion exchanger
and sometimes a ligand specific for the analyte ion.
D. The potential difference across the organic polymer membrane occurs when the analyte ions embedded in the membrane diffuse
into the inner aqueous solution creating a junction potential.
E. The potential difference is dependent only on the activity of anallyte ion in the outer solution.

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