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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James ISBN: 9780198769866 2042

Solution for problem P19D.4 Chapter 19D

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James

Atkins' Physical Chemistry | 11th Edition

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Problem P19D.4

V.V. Losev and A.P. Pchel’nikov (Soviet Electrochem. 6, 34 (1970)) obtained the following current–voltage data for an indium anode relative to a standard hydrogen electrode at 293 K:

\(\begin{array}{lllll}-E^{\prime} / \mathrm{V} & 0.388 & 0.365 & 0.350 & 0.335 \\j /\left(\mathrm{A} \mathrm{m}^{-2}\right) & 0 & 0.590 & 1.438 & 3.507\end{array}\)

Use these data to calculate the transfer coefficient and the exchange-current density. What is the cathodic current density when the potential is 0.365 V? Hint: The value of \(E^{\prime}\) with j = 0 is the equilibrium potential.

Text Transcription:

-E^prime/V & 0.388 & 0.365 & 0.350 & 0.335 over j/(A m^-2) & 0 & 0.590 & 1.438 & 3.507

E^prime

Step-by-Step Solution:
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Organic Chemistry (8/6-8/8 Notes)  Exam 1 (Professor Anne Gordon)  Wednesday’s Notes o A Brønsted-Lowry Acid is species that donate a proton o A Brønsted-Lowry (BL) Base is a species that can accept a proton o Remember  Acid-Base reactions are also called Proton Transfer reactions  Acidity depends on medium  We’ll always think H 2 as standard, but often acids are less dissociated in organic solvents o Acids and Bases: The Lewis Definition  Lewis acids are electron pair acceptors and Lewis bases are electron pair donors  Brønsted acids aren’t Lewis acids b/c they can’t accept an electron pair directly (only a proton would be a Lewis acid)  The Lewis definition leads to a general description of many reactions patterns but there is no scale of strength as in Brønsted definition of pK a  Lewis acid/base def:  Lewis acids ACCEPTS a pair of electrons  Lewis bases DONATES a pair of electrons  Acids under the BL def. are also acids under the Lewis def.  Bases under the BL def. are also bases under the Lewis def.  This reaction fits both definitions  Since a Lewis acid is a species that accepts electrons, it is termed an electrophile (lov

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Chapter 19D, Problem P19D.4 is Solved
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Textbook: Atkins' Physical Chemistry
Edition: 11
Author: Atkins, Peter; De Paula, Julio; Keeler, James
ISBN: 9780198769866

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