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Which one of the species below is the best reducing agent?
Related Topics
Wize University Chemistry Textbook > Electrochemistry
Reduction Potentials
4 Activities
Which one of the species below is the best reducing agent?
C
o
(
s
)
Co(s)
C
o
(
s
)
Z
n
(
s
)
Zn(s)
Z
n
(
s
)
C
u
2
+
(
a
q
)
Cu^{2+}(aq)
C
u
2
+
(
a
q
)
C
u
(
s
)
Cu(s)
C
u
(
s
)
A
g
+
(
a
q
)
Ag^+(aq)
A
g
+
(
a
q
)
I don't know
Check Submission
More Reduction Potentials Questions:
Electrochemistry: Galvanic Cells
The cell pictured below is prepared under standard conditions. In this cell, what will be the
anode
?
πΆ
π’
2
+
(
π
π
)
+
π»
2
(
π
)
β
πΆ
π’
(
π
)
+
2
π»
+
(
π
π
)
πΈ
Β°
=
0.339
π
πΆπ’^{2+} (ππ)+π»_2 (π)\rightleftharpoons πΆπ’ (π )+2 π»^+ (ππ) \qquadπΈΒ°=0.339 π
C
u
2
+
(
a
q
)
+
H
2
β
(
g
)
β
C
u
(
s
)
+
2
H
+
(
a
q
)
E
Β°
=
0.339
V
Which one of the species above is the best oxidizing agent?
Z
n
2
+
(
a
q
)
+
2
e
β
β
Z
n
(
s
)
E
o
=
β
0.74
V
C
u
2
+
(
a
q
)
+
2
e
β
β
C
u
(
s
)
E
o
=
+
0.34
V
C
o
2
+
(
a
q
)
+
2
e
β
β
C
o
(
s
)
E
o
=
β
0.28
V
A
g
+
(
a
q
)
+
e
β
β
A
g
(
s
)
E
o
=
+
0.80
V
\def\arraystretch{1.5}\begin{array}{cc}Zn^{2+}(aq)+2e^-βZn(s)&&E^o=-0.74V\\ Cu^{2+}(aq)+2e^-βCu(s)&&E^o=+0.34V\\ Co^{2+}(aq)+2e^-βCo(s)&&E^o=-0.28V\\ Ag^+(aq)+e^-βAg(s)&&E^o=+0.80V\end{array}
Z
n
2
+
(
a
q
)
+
2
e
β
β
Z
n
(
s
)
C
u
2
+
(
a
q
)
+
2
e
β
β
C
u
(
s
)
C
o
2
+
(
a
q
)
+
2
e
β
β
C
o
(
s
)
A
g
+
(
a
q
)
+
e
β
β
A
g
(
s
)
β
β
E
o
=
β
0.74
V
E
o
=
+
0.34
V
E
o
=
β
0.28
V
E
o
=
+
0.80
V
β
A concentration cell consists of two H
2
/H
+
half-cells. Half-cell A has H
2
at 0.90 atm bubbling into 0.10 M HCl. Half-cell B has H
2
atm bubbling into 2.0 M HCl. Which half-cell houses the anode? What is the voltage of this cell?
Use the data below to answer the question:
Z
n
2
+
(
a
q
)
+
2
e
β
β
Z
n
(
s
)
E
o
=
β
0.74
V
Zn^{2+}(aq)+2e^-βZn(s)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ E^o=-0.74V
Z
n
2
+
(
a
q
)
+
2
e
β
β
Z
n
(
s
)
E
o
=
β
0.74
V
C
u
2
+
(
a
q
)
+
2
e
β
β
C
u
(
s
)
E
o
=
+
0.34
V
Cu^{2+}(aq)+2e^-βCu(s)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ E^o=+0.34V
C
u
2
+
(
a
q
)
+
2
e
β
β
C
u
(
s
)
E
o
=
+
0.34
V
