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JEEMAIN and NEET
>>
Chemistry
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Electrochemistry
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Q)
The standard reduction potentials at 298K for following half reaction are given against each.
Z
n
+
2
(
a
q
)
+
2
e
−
⇋
2
n
(
s
)
=
−
0.762
C
r
+
3
(
a
q
)
+
3
e
−
⇋
C
r
(
s
)
=
−
0.740
2
H
+
(
a
q
)
+
3
e
−
⇋
H
2
(
g
)
=
0
F
e
+
3
(
a
q
)
+
e
−
⇋
F
e
+
2
(
a
q
)
=
0.770
.
Which is the strongest reducing agent ?
(
a
)
Z
n
(
s
)
(
b
)
C
r
(
s
)
(
c
)
H
2
(
g
)
(
d
)
F
e
+
2
(
a
q
)
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