5ln the glucose sensor, the component diffuses through the inner layer of the electrode is thea. glucose oxidase2b. glucosec. hydrogen peroxided. gluconic acid8Which of the following statements is incorrectO a. Zn(Hg) is the reducing agent in the Jones reductor.Ob. Ag in water is the a reducing agent in Walden redactorOc The analyte in an oxidation/reduction titration must be in a single oxidation stateO d. to be useful as a preoxidant or a prereductant, a reagent must react quantitatively with the analyte25ln the reactionCe*+Fe2* ==> Ce + Fe*Knowing that Fe* + e ==> Fe E= 0.767 VCe* + e ==> Ce* E°= 1.70 Vcalomel reference electrode (E 0.241 V) was used.If 25 ml of 0.2 M Fe*2 was titrated against 0.1 M of Ce**, the E for this reaction upon adding 10 ml of Ce is:O a. 1.26 VO b. 0.50 VO c. 1.5 Vd. 0.73 V

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Answered: 5ln the glucose sensor, the component…

5ln the glucose sensor, the component diffuses through the inner layer of the electrode is the a. glucose oxidase 2 b. glucose C. hydrogen peroxide d. gluconic acid

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...

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Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

5ln the glucose sensor, the component diffuses through the inner layer of the electrode is the
a. glucose oxidase
2
b. glucose
c. hydrogen peroxide
d. gluconic acid
8Which of the following statements is incorrect
O a. Zn(Hg) is the reducing agent in the Jones reductor.
Ob. Ag in water is the a reducing agent in Walden redactor
Oc The analyte in an oxidation/reduction titration must be in a single oxidation state
O d. to be useful as a preoxidant or a prereductant, a reagent must react quantitatively with the analyte
25ln the reaction
Ce*+
Fe2* ==> Ce + Fe*
Knowing that Fe* + e ==> Fe E= 0.767 V
Ce* + e ==> Ce* E°= 1.70 V
calomel reference electrode (E 0.241 V) was used.
If 25 ml of 0.2 M Fe*2 was titrated against 0.1 M of Ce**, the E for this reaction upon adding 10 ml of Ce is:
O a. 1.26 V
O b. 0.50 V
O c. 1.5 V
d. 0.73 V

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