a) Explain the working principle of a glass membrane electrode which can be used to measure H + or pH ions! Include the cell notation on the pH meter's electrode and the equation relating the potential to the H + ions in the solution!

a) Explain the working principle of a glass membrane electrode which can be used to measure H + or pH ions! Include the cell notation on the pH meter's electrode and the equation relating the potential to the H + ions in the 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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Question

Glass membrane electrodes can be used to
measure H + ions in solution. But at a very
small concentration of H + ions (alkaline
conditions) it gives an error because it also
responds to Na + ions.
a) Explain the working principle of a glass
membrane electrode which can be used to
measure H + or pH ions! Include the cell
notation on the pH meter's electrode and the
equation relating the potential to the H + ions
in the solution!
b) Calculate the relative error of the H + ion
measurement that occurs if the pH meter
electrode is used to measure 1 x 10-2 M
NaOH solution (assuming kH, Na = 10 ^ -10
and the activity coefficient = 1)

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