Principles of Instrumental Analysis
7th Edition
ISBN: 9781305577213
Author: Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 23, Problem 23.1QAP
Interpretation Introduction
Interpretation:
The nernstian behavior of an indicator electrode should be predicted.
Concept introduction:
Potentiometric titration are the simple titration that is used to measure the concentration of the given sample. No indicator is required in these titrations.
Expert Solution & Answer
Answer to Problem 23.1QAP
The nernstian behavior of an indicator electrode states that an electrode follows the Nernt equation and its potential is changed by 0.059/nV.
Explanation of Solution
Indicator electrode is a type of electrode that is used in potentiometric titrations. It is used as an endpoint indicator. Membrane electrode and metallic electrodes are classified as indicator electrodes. The nernstian behavior corresponds to the Nernst equation. If the indicator electrode shows the nernstian behavior, it means that it follows the Nernst equation. In other words, the potential of the indicator electrode would be changed by 0.059/nV with respect to the change in concentration, where n is the number of electrons involve in the reaction.
Conclusion
When the indicator electrode represents the nernstian behavior that means it follows the Nernst equation and its potential is changed by 0.059/nV.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
As the concentration of an acid solution decreases, the cell potential (in V) also decreases. Why? Explain in relation to the Nernst equation.
How long would it take to titrate 1.00 mmol H2S with a current of 100.0 mA?
The cell SCE // Ag2CrO4 (sat'd), CrO42- (x M) / Ag is used for the determination of pCrO4. Calculate pCrO4 when the cell potential is 0.336 V.
Chapter 23 Solutions
Principles of Instrumental Analysis
Ch. 23 - Prob. 23.1QAPCh. 23 - Prob. 23.2QAPCh. 23 - Prob. 23.3QAPCh. 23 - Prob. 23.4QAPCh. 23 - Prob. 23.5QAPCh. 23 - Prob. 23.6QAPCh. 23 - Prob. 23.7QAPCh. 23 - Prob. 23.8QAPCh. 23 - Prob. 23.9QAPCh. 23 - List the advantages and disadvantages of a...
Ch. 23 - Prob. 23.11QAPCh. 23 - What arc the advantages of microfabricated ISEs?...Ch. 23 - Prob. 23.13QAPCh. 23 - Prob. 23.14QAPCh. 23 - Prob. 23.15QAPCh. 23 - The following cell was used for the determination...Ch. 23 - The following cell was used to determine the pSO4...Ch. 23 - The formation constant for the mercury(II) acetate...Ch. 23 - Prob. 23.19QAPCh. 23 - The cell Ag|AgCl(sat’d)||H+(a = x)|glass electrode...Ch. 23 - The following cell was found to have a potential...Ch. 23 - The following cell was found to have a potential...Ch. 23 - The following cell was found to have a potential...Ch. 23 - Prob. 23.24QAPCh. 23 - Prob. 23.25QAPCh. 23 - Prob. 23.26QAPCh. 23 - Prob. 23.27QAP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- A 0.0712-g sample of a purified organic acid was dissolved in an alcohol-water mixture and titrated with coulometrically generated hydroxide ions. With a current of 0.0392 A, 241 s was required to reach aphenolphthalein end point. Calculate the equivalent mass of the acid.arrow_forwardGalvanic cells harness spontaneous oxidationreduction reactions to produce work by producing a current. They do so by controlling the flow of electrons from the species oxidized to the species reduced. How is a galvanic cell designed? What is in the cathode compartment? The anode compartment? What purpose do electrodes serve? Which way do electrons always flow in the wire connecting the two electrodes in a galvanic cell? Why is it necessary to use a salt bridge or a porous disk in a galvanic cell? Which way do cations flow in the salt bridge? Which way do the anions flow? What is a cell potential and what is a volt?arrow_forwardAt what pH does Ecell = 0.00 V for the reduction of dichromate by iodide ion in acid solution, assuming standard-state concentrations of all species except H+ ion?arrow_forward
- With regard to the glass electrode; describe the structure of the cell membrane with aid of diagrams.arrow_forwardExplain the principle behind the working of an ion selective electrodearrow_forward4. 5 mL of 0.006 M arsenite (As2O3) solution is subjected to coulometric titration as described in this laboratory using a current of 30 mA. Calculate the time that the current should be applied to reach the endpoint of the titration. INTRODUCTION:arrow_forward
- Discuss design features of Standard Hydrogen Electrode (SHE). Using suitable diagram explain how SHE can be used to measure the standard potential of Magnesium (Mg) electrode.arrow_forwardThe standard reaction Gibbs energy for the electrochemical reaction Cr2O7^2- + 2 Fe + 14 H+ → 2 Cr3+ + 2 Fe3+ 7 H2O is -793 kJ mol-1. Calculate the standard cell potential.arrow_forward1. (a) Balance the following simple redox reaction. Fe (s) + O2(g) + 2H2O (I) Fe* + 4 OH (b) If the standard change in the Gibbs energy of the molar reaction in part (a) -507.13 kJ. Calculate the cell potential of the reaction. 2. Calculate the equilibrium constant at 25°C for the reaction H2 + 2Fe 3+ 2H* + Fe2+ E° H'|H2 = 0.00 V and E° Fe3 |Fe2 = 0.771 Varrow_forward
- At what pH will hydrogen electrode at 298 K show an electrode potential of-0.118 V, when Hydrogen gas is bubbled at 1 atm pressure ?arrow_forwardWhich of the following statements is incorrect? O In metallic indicator electrodes, the potential arises from the tendency of a redox reaction to occur at an electrode surface. O An electrolytic cell is a cell in which an external supply of electrical energy is used to bring about a physical or chemical change. O All statements are correct. O In membrane indicator electrodes, the potential is a kind of junction potential that develops across a membrane that separates the analyte solution from a reference solution. O A galvanic cell is a device which converts the Gibbs free energy of a physical or chemical change into electrical energy.arrow_forwardOutline the change in composition of a solution of the salt of a triprotic acid as the pH is changed from 1 to 14.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage Learning
Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
General Chemistry - Standalone book (MindTap Cour...
Chemistry
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Cengage Learning
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
Chemistry: Principles and Practice
Chemistry
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Cengage Learning