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(1.) For first question in the first picture, please refer to this:  The last 3 questions: Based on observation, 1. Increasing ability to undergo oxidation Cu

(1.) For first question in the first picture, please refer to this:  The last 3 questions: Based on observation, 1. Increasing ability to undergo oxidation Cu

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
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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(1.) For first question in the first picture, please refer to this: 

The last 3 questions:

Based on observation,

1. Increasing ability to undergo oxidation

Cu<Fe<Zn

2. Three metals in terms of increasing strength as reducing agent

Cu<Fe<Zn

3. Increasing strength as an oxidizing agent

 

(2.) Refer to the table in the first picture to answer the question. 

Use the table above to answer this item. Aside from zinc, name another metal that can be used as a sacrificial anode to prevent corrosion of iron? (use small letters and type the full name of the metal, do not use symbol).
Transcribed Image Text:Use the table above to answer this item. Aside from zinc, name another metal that can be used as a sacrificial anode to prevent corrosion of iron? (use small letters and type the full name of the metal, do not use symbol).
The last 3 questions above can be conveniently summarized in a reduction potential table as in the one below: TABLE 18.1 Standard Reduction Potentials at 25°C Reduction Half-Reaction (V) page 775 F/ +2 2.87 Stronger oxidizing agent H₂O₂(aq) + 2 H(aq) + 2€ 1.78 1.51 MnOtaq) + 8 H(aq) + 5 Cl₂(g) + 2 1.36 Cr₂O(aq)+ 14 H(aq) + 6- 1.33 O₂(g) + 4H(aq) + 4 € 1.23 Bry() +26 1.09 Ag (aq) + 0.80 Fe²(aq) + 0.77 Oila) + 2H*(aq) +26 0.70 ₂(0)+2 0.54 O₂(g) + 2 H₂O() + 4€ 0.40 0.34 Cu (aq) + 2 Sm(aq) + 2 0.15 0 -0.13 2 H(aq) + 2 Pb (aq) + 2 Ni(ag) + 2 Cd (aq) + 2 -0.26 -0.40 Fe (aq) + 2 -0.45 Zn (aq) + 2 -0.76 2 H₂O() +2 H₂(g) + 2OH(aq) -0.83 Al(a) -1.66 -2.37 Weaker oxidizing agent Al (aq) + 3 Mg(aq) + 2 Na (aq) + 6 Li (aq) + e Mg(a) Na(s) Li(s) -2.71 Stronger reducing agent -3.04 look for the half-reactions of Cu(s), Fe(s) and Zn(s). Does your answer in the last3 items (supported by the agar experiment and reduction potential calculations) consistent with this table? Yes O No →2P²(aq) → 2 H₂O(0) →→Mn(aq) + 4H₂O() 2 Cr(aq) +2CP[@q) + TH 2 H₂O(0) →2 Br(aq) →→Fe (ag) →→→→Ag(s) H₂O₂(aq) 2 (aq) 4 OH(aq) Cu(a) →→→→→Sn³ (aq) Sm² → H₂(g) Pb(s) Ni(a) Cd(s) → Fels) → Zn(a) Weaker reducing agent
Transcribed Image Text:The last 3 questions above can be conveniently summarized in a reduction potential table as in the one below: TABLE 18.1 Standard Reduction Potentials at 25°C Reduction Half-Reaction (V) page 775 F/ +2 2.87 Stronger oxidizing agent H₂O₂(aq) + 2 H(aq) + 2€ 1.78 1.51 MnOtaq) + 8 H(aq) + 5 Cl₂(g) + 2 1.36 Cr₂O(aq)+ 14 H(aq) + 6- 1.33 O₂(g) + 4H(aq) + 4 € 1.23 Bry() +26 1.09 Ag (aq) + 0.80 Fe²(aq) + 0.77 Oila) + 2H*(aq) +26 0.70 ₂(0)+2 0.54 O₂(g) + 2 H₂O() + 4€ 0.40 0.34 Cu (aq) + 2 Sm(aq) + 2 0.15 0 -0.13 2 H(aq) + 2 Pb (aq) + 2 Ni(ag) + 2 Cd (aq) + 2 -0.26 -0.40 Fe (aq) + 2 -0.45 Zn (aq) + 2 -0.76 2 H₂O() +2 H₂(g) + 2OH(aq) -0.83 Al(a) -1.66 -2.37 Weaker oxidizing agent Al (aq) + 3 Mg(aq) + 2 Na (aq) + 6 Li (aq) + e Mg(a) Na(s) Li(s) -2.71 Stronger reducing agent -3.04 look for the half-reactions of Cu(s), Fe(s) and Zn(s). Does your answer in the last3 items (supported by the agar experiment and reduction potential calculations) consistent with this table? Yes O No →2P²(aq) → 2 H₂O(0) →→Mn(aq) + 4H₂O() 2 Cr(aq) +2CP[@q) + TH 2 H₂O(0) →2 Br(aq) →→Fe (ag) →→→→Ag(s) H₂O₂(aq) 2 (aq) 4 OH(aq) Cu(a) →→→→→Sn³ (aq) Sm² → H₂(g) Pb(s) Ni(a) Cd(s) → Fels) → Zn(a) Weaker reducing agent
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