Which one of the following is correct? Select one: 0 a. Controlled potential means the potential difference between counter electrode and working electrode is constant. Ob. Acidic error in pH measurement shows higher pH value than the actual pH. O c. Isopotential point is the point in which the potential is independent on pH value. O d. Organic ion exchanger immobilizod in PVC gol is an oxample of crystalline membrane electrode. De. Constant voltage means the potential difforence betweon auxiliary electrodo and roforence clectrode is constant.

Which one of the following is correct? Select one: 0 a. Controlled potential means the potential difference between counter electrode and working electrode is constant. Ob. Acidic error in pH measurement shows higher pH value than the actual pH. O c. Isopotential point is the point in which the potential is independent on pH value. O d. Organic ion exchanger immobilizod in PVC gol is an oxample of crystalline membrane electrode. De. Constant voltage means the potential difforence betweon auxiliary electrodo and roforence clectrode is constant.

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...

See similar textbooks

Similar questions

Asymmetry potential is encountered with which of the following electrodes? a. Ion-exchanger electrode b. PVC-based electrode c. Pt electrode d. pH electrode
Part C. Effect of Equivalent mass (EM) to the amount deposited on the cathode at constant current and time. Ampere Amount deposited Positive Negative Solution EM ЕМ time Terminal terminal (An ode) (Cathode) on the cath ode (final mass- initial mass) Al Cu | Al(NO3)3 (aq) 9 g/eq 10 min 12.00 A Fe Cu Fe(NO3)2 (aq) 28 g/eq 10 min 12.00 A Zn Cu Zn(NO3)2 32.5 gleq 10 min| 12.00 A What is the relation ship of the equivalent mass (EM) to the amount deposited on the cathode at constant current and time?
SHOW YOUR COMPLETE SOLUTION
29
i need the answer quickly
From the initial measurements you determine the electrode slope is -56.7 mV. You measure the initial potential of an unknown to be 84.5 mV. After the addition of 0.1027 M fluoride the potential drops to 39.9 mV. What is the molarity of fluoride in the original, undiluted, unknown? Answer is 3.97. How to derive?
5H2O2 + 6H+ + 2MnO4- → 2Mn2+ + 8H2O + 5O2 Calculate the equivalence point electrode potential for the given reaction. Take the concentration of [H+] as 0.1 M. MnO4- + 8H+ + 5e- → Mn2+ + 4H2O E0 = 1.51 V O2 + 2H+ + 2e- → H2O2 E0 = 0.682 V A. 1.10VB. 1.19VC. 1.27VD. 0.88V
An ideal Pb?+ ion-selective electrode is moved from a 5.80 x 10- M Pb(NO,), solution to a 3.45 x 10- M Pb(NO, ), solution at 25 °C. By how many millivolts will the potential of the ion-selective electrode change when it is moved from the first solution to the second solution? mV AE =
Plz help
Methylene blue is a redox indicator which gains 2 electrons as it is transformed into its reduced form. Its standard potential is E° = 0.53 V. The effective range of this indicator with respect to S.C.E. is V (lower bound) to V (upper bound).
Which of the following conditions are among the requirements for a Nernst equilibrium potential to exist for a given charged ion species across a semipermeable membrane, as in an ion-selective electrode? Select one: O a. A concentration gradient for a given charged ion species must exist across that membrane O b. If a membrane is permeable to two different species, then the ion activity of both species can be measured O . The membrane must be impregnated with ionic species O d. The semipermeable membrane must be permeable to many ion species O e. The membrane potential across a semipermeable membrane must be constantly changing