(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
Chapter18: Electrochemistry
Section: Chapter Questions
Problem 150CP: Given the following two standard reduction potentials, solve for the standard reduction potential of...
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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.
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).
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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