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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Please find the answer for question 3
Transcribed Image Text:Question 1: Write out the chemical equation for the equilibrium in each cup. Be sure to include
electrons on the proper side of the equation (you may find it useful to look at the Standard
Potential table (below).
Cu²+ (aq) + 2e → Cu(s)
Cu²+ (aq) + 2e → Cu(s)
Cu²+ (aq) + 2e →→ Cu(s)
Ni²+ (aq) + 2e →→→ Ni(s)
2+
Zn²+ (aq) + 2e → > Zn(s)
Zn(s) → Zn²+ (aq) + 2e-
Ni(s) → Ni²+ (aq) + 2e
Mg(s) → Mg2+ (aq) + 2e
Mg(s) → Mg2+ (aq) + 2e
Mg(s) → Mg2+ (aq) + 2e
Question 2: Write out the complete equation for the chemical reaction that occurred when you
joined the cups together to make a voltaic cell. Make sure the equation is balanced.
Zn(s) + Cu²+ (aq) → Zn²+ (aq) + Cu(s)
Ni(s) + Cu²+ (aq) → Ni²¹(aq) + Cu(s)
Mg(s) + Cu²+ (aq) → Mg²+(aq) + Cu(s)
Mg(s) + Ni²+ (aq) → Mg²+(aq) + Ni(s)
2+
Mg(s) + Zn²+ (aq) → Mg²+ (aq) + Zn(s)
Question 3: Based on your equation, which metal was oxidized and which was reduced in the
reactions you observed?
1
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