Consider the metals: Cu(s), Au(s), Pb(s), Hg(), and Cr(s). How many of these metals would not react with HCl(aq) forming H₂ gas? 3+ Au³+(aq) +3 e¯ →→ Au(s) Hg₂² (aq) +2 e→ 2 Hg(l) +e- Cu²+(aq) + e→→ Cu(s) Pb²+ (aq) +2 e → Pb(s) Cr³+ (aq) + 3 e→Cr(s) A. 1 B.2 C. 3 D. 4 E. 5 E° = 1.50 V Eº = 0.80 V E° = 0.34 V Eº = -0.13 V Eº = -0.73 V
Consider the metals: Cu(s), Au(s), Pb(s), Hg(), and Cr(s). How many of these metals would not react with HCl(aq) forming H₂ gas? 3+ Au³+(aq) +3 e¯ →→ Au(s) Hg₂² (aq) +2 e→ 2 Hg(l) +e- Cu²+(aq) + e→→ Cu(s) Pb²+ (aq) +2 e → Pb(s) Cr³+ (aq) + 3 e→Cr(s) A. 1 B.2 C. 3 D. 4 E. 5 E° = 1.50 V Eº = 0.80 V E° = 0.34 V Eº = -0.13 V Eº = -0.73 V
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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The answer is C. Please explain. Thanks.
Transcribed Image Text:Consider the metals: Cu(s), Au(s), Pb(s), Hg(), and Cr(s).
How many of these metals would not react with HCl(aq) forming H₂ gas?
3+
Au³+(aq) +3 e¯ →→ Au(s)
Hg₂² (aq) +2 e→ 2 Hg(l)
+e-
Cu²+(aq) + e→→ Cu(s)
Pb²+ (aq) +2 e → Pb(s)
Cr³+ (aq) + 3 e→Cr(s)
A. 1
B.2
C. 3
D. 4
E. 5
E° = 1.50 V
Eº = 0.80 V
E° = 0.34 V
Eº = -0.13 V
Eº = -0.73 V
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