Answered: calculate Keq

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter16: Thermodynamics: Directionality Of Chemical Reactions

Section: Chapter Questions

Problem 53QRT

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Question

Constant	Value
E∘Cu�Cu∘	0.337 VV
E∘Ni�Ni∘	-0.257 VV
R�	8.314 J⋅mol−1⋅K−1J⋅mol−1⋅K−1
F�	96,485 C/molC/mol
T�	298 K

In the activity, click on the E∘cell�cell∘ and Keq�eq quantities to observe how they are related. Use this relation to calculate Keq�eq for the following redox reaction that occurs in an electrochemical cell having two electrodes: a cathode and an anode. The two half-reactions that occur in the cell are

Cu2+(aq)+2e−→Cu(s)Cu2+(aq)+2e−→Cu(s)

and

Ni(s)→Ni2+(aq)+2e−Ni(s)→Ni2+(aq)+2e−

The net reaction is

Cu2+(aq)+Ni(s)→Cu(s)+Ni2+(aq)Cu2+(aq)+Ni(s)→Cu(s)+Ni2+(aq)

Use the given standard reduction potentials in your calculation as appropriate.

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