Question - A fluroide ISE electrode was used to determine the amount of fluoride in water. The results are given for 4 standards and two unknowns below. Does the calibration curve show nernstian behavior or not? What are the concentrations for the unknown samples?
Solution [F]/M Potential vs SCE (mV)
0.0005 0.02
0.0001 41.2
0.00005 61.5
0.00001 100.2
Sample 1 38.9
Sample 2 55.3
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