Answered: Useful Information Half reaction E (v)…

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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Question

Two Pt electrodes are placed in an aqueous solution of ZnSO4 at pH 7 and a potential of 2.00v is applied to the electrodes. In the sulfate ion, sulfur is in its highest oxidation state.

a) What are the possible reduction reactions that can take place in this system?

(2H+) + (2e-)--> H2 E= -0.41v at pH 7

(Zn^2+) + (2e-)--> Zn E*= -0.76v

Can you explain why this is the solution?

Useful
Information
Half reaction
E (v)
½Cl2 + e-→ Cl-
+1.36 v
0.82 (pH 7.00)
0.80
0.77
0.34
-0.036
-0.41 (pH 700)
0.44
0.76
Ag+ + e-→ Ag(s)
Fe te- Fe
Cut +2e Cu(s)
Fet +3e Fe(s)
Zn2 +2e Zn(s)

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