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Chemistry
List of top Chemistry Questions on Redox reactions asked in COMEDK UGET
Strongest reducing agent among the following is (i)
N
a
+
+
e
−
−
>
N
a
(
s
)
E
∘
=
−
2.71
V
{Na^+ + e^- ->Na_{(s)} \:\: E^{\circ} = - 2.71 \, V}
N
a
+
+
e
−
−
>
N
a
(
s
)
E
∘
=
−
2.71
V
(ii)
A
l
3
+
+
3
e
−
−
>
A
l
(
s
)
E
∘
=
−
1.66
V
{Al^{3+} + 3e^- ->Al_{(s)} \:\: E^{\circ} = - 1.66 \, V}
A
l
3
+
+
3
e
−
−
>
A
l
(
s
)
E
∘
=
−
1.66
V
(iii)
F
2
(
g
)
+
2
e
−
−
>
2
F
−
E
∘
=
+
2.87
V
{F_{2(g)} + 2e^- ->2F^- \:\: E^{\circ} = + 2.87 \, V}
F
2
(
g
)
+
2
e
−
−
>
2
F
−
E
∘
=
+
2.87
V
(iv)
2
H
2
O
+
2
e
−
−
>
H
2
(
g
)
+
2
O
H
(
a
q
)
−
E
∘
=
−
0.83
V
{2H_2 O+ 2e^- ->H_{2(g)} + 2OH^-_{(aq)} \:\: E^{\circ} = - 0.83\, V}
2
H
2
O
+
2
e
−
−
>
H
2
(
g
)
+
2
O
H
(
a
q
)
−
E
∘
=
−
0.83
V
COMEDK UGET - 2015
COMEDK UGET
Chemistry
Redox reactions