Homework Help is Here – Start Your Trial Now!
Science
Chemistry
s. Given the following selectivity data (kij) for this ISE, à Chat activity = concentration). erant ion Log k -4

s. Given the following selectivity data (kij) for this ISE, à Chat activity = concentration). erant ion Log k -4

Principles of Instrumental Analysis
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter24: Coulometry
Section: Chapter Questions
Problem 24.5QAP: What cathode potential (versus SCE) would be required to lower the total Hg(II) concentration of the...
See similar textbooks
icon
Related questions
Question
The potassium ion selective electrode uses valinomycin as its ionophore to achieve high level of selectivity over other ions. Given the following selectivity data (kij) for this ISE, answer the following questions: (You may assume that activity = concentration). Interferant ion Na+ Ca²+ Mg2+ Log kij -4 -7 -7 a) How much greater must [Na+] be than [K+] for the two ions to give an equal response? (c) If the calibration constant (Econst) was previously found to be 0.197 V. Calculate [K+] if the ISE gives a reading of -0.029 V in a solution which also contains 0.5 M Nat and 0.2 M Ca²+. Give the answer in μM (micro moles per litre).
Transcribed Image Text:The potassium ion selective electrode uses valinomycin as its ionophore to achieve high level of selectivity over other ions. Given the following selectivity data (kij) for this ISE, answer the following questions: (You may assume that activity = concentration). Interferant ion Na+ Ca²+ Mg2+ Log kij -4 -7 -7 a) How much greater must [Na+] be than [K+] for the two ions to give an equal response? (c) If the calibration constant (Econst) was previously found to be 0.197 V. Calculate [K+] if the ISE gives a reading of -0.029 V in a solution which also contains 0.5 M Nat and 0.2 M Ca²+. Give the answer in μM (micro moles per litre).
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Biological Importance of Chemical Elements
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Fundamentals Of Analytical Chemistry
Fundamentals Of Analytical Chemistry
Chemistry
ISBN:
9781285640686
Author:
Skoog
Publisher:
Cengage
Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS