21-27, The F- concentration of a solution was determined by measurements with a liquid-membrane elec- trode. The electrode system developed a potential of 0.5021 V when immersed in 25.00 mL of the sam- ple, and 0.4213 V after the addition of 2.00 mL of 5.45 × 10-²M NaF. Calculate pF for the sample.

21-27, The F- concentration of a solution was determined by measurements with a liquid-membrane elec- trode. The electrode system developed a potential of 0.5021 V when immersed in 25.00 mL of the sam- ple, and 0.4213 V after the addition of 2.00 mL of 5.45 × 10-²M NaF. Calculate pF for the sample.

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 23.7QAP

See similar textbooks

Similar questions

The following cell was found to have a potential of —0.492 V: Ag|AgCl(sat’d)||HA(0.200 M),NaA(0.300 M)|H2(1.00 atm),Pt Calculate the dissociation constant of HA, neglecting the junction potential.
A bromine ion selective electrode has a selectivity coefficient K Br-, OH- = 0.05. What will be the change (absolute value in mV, NO UNITS, one figure after decimal point examples 3.3 or 33.0) in electrode potential when in 4.0 x 10-5 M Br" aqueous solution pH 6.0 is raised to pH 9.8 at constant temperature of 25 °C? Give answer as an absolute value in mV, NO UNITS, one figure after decimal point, examples 3.3 and 33.0 Answer:
50.00 ml of 0.1000 M Fe(CN)64- solution is titrated with 0.05000 M Tl3+ solution potentiometrically using S.C.E. and Pt electrodes. Calculate the values of the potential when 10.0, 50.0 and 60.0 ml of titrant have been added.
A 40.00-mL aliquot of 0.05000 M HNO2 is diluted to 75.00 mL and titrated with 0.0800 M Ce4+. The pH of the solution is maintained at 1.00 throughout the titration; the formal potential of the cerium system is 1.44 V. Calculate the potential of the indicator electrode with respect to a saturated calomel reference electrode after the addition of 5.00, 10.00, 15.00, 25.00, 40.00, 49.00, 49.50, 49.60, 49.70, 49.80, 49.90, 49.95, 49.99, 50.00, 50.01, 50.05, 50.10, 50.20, 50.30, 50.40, 50.50, 51.00, 60.00, 75.00, and 90.00 mL of cerium(IV). Generate a titration curve for these data. Upload your excel file showing the titration curve and manual computations. Upload Choose a file