2. Given the table of reduction potentials, which metals will displace hydrogen gas out of acid? Half Reaction Potential ut lag) +e- u 3.05 I. Aluminum K* lag) •e - K (s) -2.93 M (aa) 2 Mg (s) II. Palladium -2.38 2 A (aq) • 3e - Al is) -1.66 III. Potassium 2 H2O 2e- H2 (g)+2 OH (aq) 0.83 Zn+ (aq) + 2 e - Zn (s) IV. Zinc 0.76 Fe Cag) + 2e - Fe ts) -0.44 Pb (aq) + 2 e - Pb s) 0.13 А. II only B. I and III C. I and IV D. I, III, and IV E. none of the above 2H (ag) + 2e- H2 (g) 0.00 Cu (aq) • 2 e - Cu (s) +0.34 Hg (aa)+2e 2 Hg () *0.79 Ag* laq) +e - Ag is) •0.80 P (ag)+2e - Pd () +0.92 Pr- (ag) + 2e - Pt (s) 1.20 Au (aq)+e Au (s) 1.68
2. Given the table of reduction potentials, which metals will displace hydrogen gas out of acid? Half Reaction Potential ut lag) +e- u 3.05 I. Aluminum K* lag) •e - K (s) -2.93 M (aa) 2 Mg (s) II. Palladium -2.38 2 A (aq) • 3e - Al is) -1.66 III. Potassium 2 H2O 2e- H2 (g)+2 OH (aq) 0.83 Zn+ (aq) + 2 e - Zn (s) IV. Zinc 0.76 Fe Cag) + 2e - Fe ts) -0.44 Pb (aq) + 2 e - Pb s) 0.13 А. II only B. I and III C. I and IV D. I, III, and IV E. none of the above 2H (ag) + 2e- H2 (g) 0.00 Cu (aq) • 2 e - Cu (s) +0.34 Hg (aa)+2e 2 Hg () *0.79 Ag* laq) +e - Ag is) •0.80 P (ag)+2e - Pd () +0.92 Pr- (ag) + 2e - Pt (s) 1.20 Au (aq)+e Au (s) 1.68
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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Transcribed Image Text:2. Given the table of reduction potentials, which metals will displace hydrogen gas out of acid?
Half Reaction
Potential
Lit taq) +eLi is
3.05
I. Aluminum
K* taq) • e - K(s)
-2.93
Mg (aq) + 2. - Mg (s)
II. Palladium
-2.38
2
A- (aq) • 3e - Al is)
-1.66
III. Potassium
2 H20 2e - Hz (g) +2 OH (aq) 0.83
Zn+ (aq) + 2e - Zn (s)
IV. Zinc
0.76
Fe+ (aa) + 2e - Fe is)
0.44
Pb (ag) + 2 e - Pb s)
0.13
A. II only
B. I and III
C. II and IV
D. I, III, and IV
E. none of the above
2H (aq) + 2e - H2 (g)
0.00
a (aq) • 2 e - Cu (s)
0.34
H (aa)+2e 2 Hg ()
*0.79
Ag* laq) •e - Ag is)
0.80
Po (ag)+2e- Pd (s)
+0.92
Pr- (ag) + 2 e- Pt (s)
•1.20
Au (aq)+e Au (s)
+1.68
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