Given the following calibration curve data recorded from a K-ion selective electrode. The unknown and samples have a TISAB buffer (0.1 M NaCI) added to prevent changes in the ionic strength impacting the results. Potential E vs |-log [K*, mol/L] Ref pK 0.5923 95.0 1.5918 38.0 3.5918 -80.0 If the potential of an unknown K* solution is E vs REf=69.73. Assume the original unknown sample was diluted by the following: A 8 aliquot of the original unknown was diluted to a total volume of 28 mL. Report the original concentration of K in ppm K to 2 decimal places

Given the following calibration curve data recorded from a K-ion selective electrode. The unknown and samples have a TISAB buffer (0.1 M NaCI) added to prevent changes in the ionic strength impacting the results. Potential E vs |-log [K, mol/L] Ref pK 0.5923 95.0 1.5918 38.0 3.5918 -80.0 If the potential of an unknown K solution is E vs REf=69.73. Assume the original unknown sample was diluted by the following: A 8 aliquot of the original unknown was diluted to a total volume of 28 mL. Report the original concentration of K in ppm K to 2 decimal places

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

Given the following calibration curve data recorded from a K-ion selective electrode. The unknown and samples have a TISAB buffer
(0.1 M NaCI) added to prevent changes in the ionic strength impacting the results.
Potential E vs
|-log [K*, mol/L]
Ref
pK
0.5923
95.0
1.5918
38.0
3.5918
-80.0
If the potential of an unknown K* solution is E vs REf=69.73.
Assume the original unknown sample was diluted by the following: A 8 aliquot of the original unknown was diluted to a total volume
of 28 mL.
Report the original concentration of K in ppm K to 2 decimal places

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