Al3+ + Зе Cr3+ + Зе -> Al(s) Cr(s) Cu²+ + 2e - Cu Zn²+ + 2e → Zn Mn²+ + 2e →→ Mn 7. The standard reduction potentials for two half-reactions are shown above. Which of the statements listed below will be true for the following reaction taking place under standard conditions? Eº = -1.66 V Eº = -0.73 V Al (s) + Cr³+ Al³+ + Cr (s) a. E° = 2.39 V, and the reaction is not spontaneous b. E°= 0.93 V, and the reaction is spontaneous c. Eº = -0.93 V, and the reaction is not spontaneous d. E° = -0.93 V, and the reaction is spontaneous e. E° = -2.39 V, and the reaction is not spontaneous Eº = +0.34 V Eº = -0.76 V E° = -1.18 V 8. Based on the above reduction potential, which of the following reactions will occur spontaneously? a. Mn²+ + Cu Mn + Cu²+ b. Mn²+ + Zn > Mn + Zn²+ c. Zn²+ + Cu → Zn + Cu²+ d. Zn²+ + Mn → Zn + Mn²+ Cu + Zn e. Cu²+ + Zn²+
Al3+ + Зе Cr3+ + Зе -> Al(s) Cr(s) Cu²+ + 2e - Cu Zn²+ + 2e → Zn Mn²+ + 2e →→ Mn 7. The standard reduction potentials for two half-reactions are shown above. Which of the statements listed below will be true for the following reaction taking place under standard conditions? Eº = -1.66 V Eº = -0.73 V Al (s) + Cr³+ Al³+ + Cr (s) a. E° = 2.39 V, and the reaction is not spontaneous b. E°= 0.93 V, and the reaction is spontaneous c. Eº = -0.93 V, and the reaction is not spontaneous d. E° = -0.93 V, and the reaction is spontaneous e. E° = -2.39 V, and the reaction is not spontaneous Eº = +0.34 V Eº = -0.76 V E° = -1.18 V 8. Based on the above reduction potential, which of the following reactions will occur spontaneously? a. Mn²+ + Cu Mn + Cu²+ b. Mn²+ + Zn > Mn + Zn²+ c. Zn²+ + Cu → Zn + Cu²+ d. Zn²+ + Mn → Zn + Mn²+ Cu + Zn e. Cu²+ + Zn²+
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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Pls help ASAP on both.
Transcribed Image Text:Al³+ + 3e
Cr3+ + Зе
Al(s)
Cu²+ + 2e →→ Cu
Zn²+ + 2e
Zn
Mn²+ + 2e →→ Mn
Cr(s)
7. The standard reduction potentials for two half-reactions are shown above. Which of the
statements listed below will be true for the following reaction taking place under standard
conditions?
Al(s) + Cr³+ Al³+ + Cr (s)
a.
E° =
2.39 V, and the reaction is not spontaneous
0.93 V, and the reaction is spontaneous
b.
E° =
c. E° = -0.93 V, and the reaction is not spontaneous
d. E° = -0.93 V, and the reaction is spontaneous
e.
E° = -2.39 V, and the reaction is not spontaneous
a. Mn²+ + Cu
b. Mn²+ + Zn
c. Zn²+ + Cu
d. Zn²+ + Mn
e. Cu²+ + Zn²+
Eº = -1.66 V
Eº = -0.73 V
E° = +0.34 V
E° = -0.76 V
Eº = -1.18 V
8. Based on the above reduction potential, which of the following reactions will occur
spontaneously?
Mn + Cu²+
Mn + Zn²+
Zn + Cu²+
→ Zn + Mn²+
→ Cu + Zn
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