е. Which metal is losing electrons?

Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 135CWP: Consider a galvanic cell based on the following half-reactions: a. What is the expected cell...
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Solve sub-question e and g
1.
This question is about the redox reaction involving the half equations:
Zn²+ + 2e 2 Zn
E® = - 0.76 volts
Cu2+ + 2e¯
2 Cu
E® = + 0.34 volts
а.
Draw a labelled diagram of a cell formed from copper, zinc and suitable
solutions.
b. Write an equation to show the overall reaction occurring when a current is drawn
from this cell.
c. Which of the two metals, zinc or copper, is the more reactive?
d. How is this apparent from the E° values above?
e. Which metal is losing electrons?
f.
How does this fit with the term OIL RIG?
g. The electrode potential (E value) for the copper half cell was found by combining
it with a standard hydrogen electrode. Draw a fully labelled diagram to show
how this would be done.
Transcribed Image Text:1. This question is about the redox reaction involving the half equations: Zn²+ + 2e 2 Zn E® = - 0.76 volts Cu2+ + 2e¯ 2 Cu E® = + 0.34 volts а. Draw a labelled diagram of a cell formed from copper, zinc and suitable solutions. b. Write an equation to show the overall reaction occurring when a current is drawn from this cell. c. Which of the two metals, zinc or copper, is the more reactive? d. How is this apparent from the E° values above? e. Which metal is losing electrons? f. How does this fit with the term OIL RIG? g. The electrode potential (E value) for the copper half cell was found by combining it with a standard hydrogen electrode. Draw a fully labelled diagram to show how this would be done.
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