You calibrate a fluoride ion-selective electrode (F) with a series of fluoride standards. Plotting E (mV) vs. Log [F] gives a straight line and th equation of the line from your regression analysis is y = -58.5x-192.5. You analyze an unknown water sample with the F* -ISE and the potential is 81.2 mV. Calculate the [F]. ● ● ● ● A. - 4.68 M B. 4.7 x 104 M OC. 2.7 x 103 M D. 2.1 x 10-5 M E. Not Enough Information to determine
You calibrate a fluoride ion-selective electrode (F) with a series of fluoride standards. Plotting E (mV) vs. Log [F] gives a straight line and th equation of the line from your regression analysis is y = -58.5x-192.5. You analyze an unknown water sample with the F* -ISE and the potential is 81.2 mV. Calculate the [F]. ● ● ● ● A. - 4.68 M B. 4.7 x 104 M OC. 2.7 x 103 M D. 2.1 x 10-5 M E. Not Enough Information to determine
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
Chapter23: Potentiometry
Section: Chapter Questions
Problem 23.14QAP
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![You calibrate a fluoride ion-selective electrode (F) with a series of fluoride standards. Plotting E (mV) vs. Log [F] gives a straight line and the
equation of the line from your regression analysis is y = -58.5x -192.5. You analyze an unknown water sample with the F* - ISE and the
potential is 81.2 mV. Calculate the [F].
●
●
A. - 4.68 M
B. 4.7 x 104 M
C. 2.7 x 10³ M
D. 2.1 x 10-5 M
E. Not Enough Information to determine](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F70774868-ea05-4fa3-ae6c-7ea4e68d506a%2F1236cff3-8c9f-49f0-9b6d-1d89abd3c20c%2Fkdfcshs_processed.png&w=3840&q=75)
Transcribed Image Text:You calibrate a fluoride ion-selective electrode (F) with a series of fluoride standards. Plotting E (mV) vs. Log [F] gives a straight line and the
equation of the line from your regression analysis is y = -58.5x -192.5. You analyze an unknown water sample with the F* - ISE and the
potential is 81.2 mV. Calculate the [F].
●
●
A. - 4.68 M
B. 4.7 x 104 M
C. 2.7 x 10³ M
D. 2.1 x 10-5 M
E. Not Enough Information to determine
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