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Byju's Answer
Standard XII
Chemistry
Electrode Potential
If O x 1 +a...
Question
If
O
x
1
+
a
e
−
⇌
R
e
d
1
,
E
1
o
O
x
2
+
b
e
−
⇌
R
e
d
2
,
E
2
o
The potential at the equivalence point is
:
A
E
=
a
E
1
o
+
b
E
2
o
(
a
+
b
)
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B
E
=
a
E
1
o
−
b
E
2
o
(
a
+
b
)
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C
E
=
b
E
1
o
−
a
E
2
o
(
a
+
b
)
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D
E
=
a
E
1
o
−
b
E
2
o
(
a
−
b
)
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Solution
The correct option is
A
E
=
a
E
1
o
+
b
E
2
o
(
a
+
b
)
O
x
1
+
a
e
−
⇌
R
e
d
1
,
E
1
o
O
x
2
+
b
e
−
⇌
R
e
d
2
,
E
2
o
At the equivalent point, all species are in unit concentration and
Δ
G
o
(
n
e
t
)
=
Δ
G
o
1
+
Δ
G
o
2
Total electrons exchanged
=
(
a
+
b
)
.
∴
Δ
G
o
=
−
n
F
E
o
.
−
(
a
+
b
)
F
E
o
3
=
−
a
F
E
o
1
−
b
F
E
o
2
∴
E
o
3
=
a
E
o
1
+
b
E
o
2
a
+
b
Hence, the correct option is
A
Suggest Corrections
0
Similar questions
Q.
In the following redox reaction:
5
F
e
2
+
+
M
n
O
−
4
+
8
H
+
⇌
M
n
2
+
+
5
F
e
3
+
+
4
H
2
O
Given:
F
e
3
+
+
e
−
⟶
F
e
2
+
,
E
1
o
M
n
O
−
4
+
8
H
+
+
5
e
−
⟶
M
n
2
+
+
4
H
2
O
,
E
2
o
Potential at the equivalence point is
:
Q.
If
∫
1
0
e
t
d
t
t
+
1
=
a
,
t
h
e
n
∫
b
b
−
1
e
−
t
d
t
(
t
−
b
−
1
)
is equal to
Q.
An element E forms an oxide E
2
O. An aqueous solution of E
2
O turns red litmus paper blue.
(a) What is the nature of the oxide E
2
O?
(b) State whether element E is a metal or a non-metal.
(c) Give one example of an element like E.
Q.
If
m
A
g
of metal
A
replaces
m
B
g
of metal
B
from its salt solution and if the equivalent weights are
E
A
and
E
B
respectively, then the equivalent weight of A can be expressed as:
Q.
The electric field and the electric potential at a point are E and V, respectively.
(a) If E = 0, V must be zero.
(b) If V = 0, E must be zero.
(c) If E ≠ 0, V cannot be zero.
(d) If V ≠0, E cannot be zero.
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