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JEEMAIN and NEET
>>
Chemistry
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Electrochemistry
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Q)
The standard potentials at 298K for the following half reactions are given against each :
Z
n
2
+
(
a
q
)
+
2
e
−
⇋
Z
n
(
s
)
−
0.762
V
2
H
+
(
a
q
)
+
2
e
−
⇋
C
r
(
s
)
0.000
V
C
r
3
+
(
a
q
)
+
3
e
−
⇋
C
r
(
s
)
−
0.740
V
F
e
3
+
(
a
q
)
+
2
e
−
⇋
F
e
2
+
(
a
q
)
0.770
V
.Which is the strongest reducing agent?
Z
n
(
s
)
C
r
(
s
)
H
2
(
g
)
F
e
2
+
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