Two different electrolytic cells are constructed to electroplate two identical objects based on the half-reactions given in the table above. An object will be plated with a certain number of moles of Au in one cell, and in the other cell another object will be plated with the same number of moles of Ag in the same amount of time. Which of the following mathematical relationships can be used to determine how much more current is needed to electroplate an object with Au than to electroplate it with Ag? Sub

Two different electrolytic cells are constructed to electroplate two identical objects based on the half-reactions given in the table above. An object will be plated with a certain number of moles of Au in one cell, and in the other cell another object will be plated with the same number of moles of Ag in the same amount of time. Which of the following mathematical relationships can be used to determine how much more current is needed to electroplate an object with Au than to electroplate it with Ag? Sub

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 5D
Half-Reaction
Standard Reduction Potential, E (V)
Ag* (aq) + e- → Ag(s)
+0.80
Au (aq) + 3 e- → Au(s)
+1.50
Two different electrolytic cells are constructed to electroplate two identical objects based on the half-reactions given in the table above. An object will be plated with a certain number of moles of Au in one
cell, and in the other cell another object will be plated with the same number of moles of Ag in the same amount of time. Which of the following mathematical relationships can be used to determine how much
more current is needed to electroplate an object with Au than to electroplate it with Ag?
Sub
The difference in standard reduction potential of Aut and Ag* is 0.70 V.
Three times more electrons are needed to reduce Au(aq) to Au(s) than are needed to reduce Ag* (ag) to Ag(s)
B
AG" is more negative for the reduction of Au+ (aq) to Au(s) than for the reduction of Ag* (aq) to Ag(s).
196.97
is
The molar-mass ratio of 4Au
107.87
Ag

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