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Indicate which of the following metals could provide cathodic protec- tion to iron, Al, Cu, Ni, Zn. Refer to Table 8.1 and justify your answers.

Indicate which of the following metals could provide cathodic protec- tion to iron, Al, Cu, Ni, Zn. Refer to Table 8.1 and justify your answers.

Chemistry
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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Table 8.1

 

StandardiReduction Potentials at 25°C Reduction Hal Reaction E(V) Stronger oxidizing 2F (aq) Weaker 2.87 F,(g) + 2e- reducing agent H,O,(aq) + 2H* (aq) +2e- 2H,0) 1,78 agent Mn2 (aq) + 4H,O() 151 Mno, (aq) + 8H*(aq) + 5e- CI,(g) + 2e- 2CH(aq) 1.36 2Cr*(aq) + 7H,0(O 1.33 Cr,0,2(aq) + 14H*(aq) + 6e- 1.23 0,9) + 4H*(aq)+ 4e 2 H,O() 2 Br(aq) 1.09 Br,(aq) + 2 e- Ag*(aq) + e Ag(s) 0.80 Fe"(aq) Fe"(aq) + e 0.77 H,O, (aq) 0.70 0,g) + 2H*(aq) + 2e ,(s) + 2e- 21 (aq) 0.54 0,(g) + 2H,0() +4e 4 Он (ag) 0.40 Cu2"(aq) + 2e- Cu(s) 0.34 Sn*(aq) + 2e Sn**(aq) 0.15 2H*(aq) + 2e- H,G) Pb*(aq) + 2e Pb(s) -0.13 Ni2*(aq) + 2e Ni(s) --0.26 Cd*(aq) + 2e Cd(s) -0.40 Fe (aq) + 2e Fe(s). 0.45 Zn (aq) + 2e Zn(s) -0.76 2H,0() + 2e H,G) + 2 OH (aq) -0.83 AI 3"(ag) + 3e Al(s) -1.66 Mg"(aq) + 2e Mg(s) -2.37 Na(s) -2.71 Stronger reducing Weaker Na*(aq) + e Oxidizing Agent Li"(aq) + e Li(s) -3.04 agent
Transcribed Image Text:StandardiReduction Potentials at 25°C Reduction Hal Reaction E(V) Stronger oxidizing 2F (aq) Weaker 2.87 F,(g) + 2e- reducing agent H,O,(aq) + 2H* (aq) +2e- 2H,0) 1,78 agent Mn2 (aq) + 4H,O() 151 Mno, (aq) + 8H*(aq) + 5e- CI,(g) + 2e- 2CH(aq) 1.36 2Cr*(aq) + 7H,0(O 1.33 Cr,0,2(aq) + 14H*(aq) + 6e- 1.23 0,9) + 4H*(aq)+ 4e 2 H,O() 2 Br(aq) 1.09 Br,(aq) + 2 e- Ag*(aq) + e Ag(s) 0.80 Fe"(aq) Fe"(aq) + e 0.77 H,O, (aq) 0.70 0,g) + 2H*(aq) + 2e ,(s) + 2e- 21 (aq) 0.54 0,(g) + 2H,0() +4e 4 Он (ag) 0.40 Cu2"(aq) + 2e- Cu(s) 0.34 Sn*(aq) + 2e Sn**(aq) 0.15 2H*(aq) + 2e- H,G) Pb*(aq) + 2e Pb(s) -0.13 Ni2*(aq) + 2e Ni(s) --0.26 Cd*(aq) + 2e Cd(s) -0.40 Fe (aq) + 2e Fe(s). 0.45 Zn (aq) + 2e Zn(s) -0.76 2H,0() + 2e H,G) + 2 OH (aq) -0.83 AI 3"(ag) + 3e Al(s) -1.66 Mg"(aq) + 2e Mg(s) -2.37 Na(s) -2.71 Stronger reducing Weaker Na*(aq) + e Oxidizing Agent Li"(aq) + e Li(s) -3.04 agent
Indicate which of the following metals could provide cathodic protec- tion to iron, Al, Cu, Ni, Zņ. Refer to Table 8.1 and justify your answers.
Transcribed Image Text:Indicate which of the following metals could provide cathodic protec- tion to iron, Al, Cu, Ni, Zņ. Refer to Table 8.1 and justify your answers.
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