What should be the pH of a solution in the cathode half-cell if the following voltaic cell is to have E°cell = 3.000 V? Express your answer in decimal notation rounded to three significant figures. Li| Li* (0.1 M) || H* (?) | H2 (g, 1 atm), Pt Lit + e- - Li E° = -3.040 V 1.68

What should be the pH of a solution in the cathode half-cell if the following voltaic cell is to have E°cell = 3.000 V? Express your answer in decimal notation rounded to three significant figures. Li| Li* (0.1 M) || H* (?) | H2 (g, 1 atm), Pt Lit + e- - Li E° = -3.040 V 1.68

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 92QRT

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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

What should be the pH of a solution in the cathode half-cell if the following voltaic cell is to have E°cell = 3.000 V?
Express your answer in decimal notation rounded to three significant figures.
Li| Li* (0.1 M) || H* (?) | H2 (g, 1 atm), Pt
Lit + e- - Li E° = -3.040 V
1.68

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