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Standard XII
Chemistry
Question
Calculate the emf of the cell
C
r
|
C
r
3
+
(
0.1
M
)
|
|
F
e
2
+
(
0.01
M
)
|
F
e
(Given:
E
∘
C
r
3
+
/
C
r
=
−
0.75
v
o
l
t
;
E
∘
F
e
2
+
/
F
e
=
−
0.45
v
o
l
t
)
.
1.231
v
o
l
t
1.361
v
o
l
t
2.461
v
o
l
t
2.561
v
o
l
t
A
2.561
v
o
l
t
B
1.231
v
o
l
t
C
1.361
v
o
l
t
D
2.461
v
o
l
t
Open in App
Solution
Verified by Toppr
C
r
|
C
r
3
+
(
0.1
M
)
|
|
F
e
2
+
(
0.01
M
)
|
F
e
E
∘
C
r
2
+
|
C
r
=
0.75
V
;
E
∘
F
e
2
+
/
F
e
=
−
0.45
V
2
C
r
3
+
+
3
F
e
⟶
3
F
e
2
+
+
2
C
r
∴
E
c
e
l
l
=
E
∘
c
e
l
l
−
R
T
n
F
l
n
Q
=
1.2
−
8.314
×
298
6
×
96500
l
n
(
0.01
)
3
(
0.1
)
2
=
1.2
−
0.00428
×
l
n
(
10
−
4
)
=
1.2
−
0.009855
×
log
(
10
−
4
)
=
1.2
+
0.0394
=
1.2394
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Similar Questions
Q1
Calculate the emf of the cell
C
r
|
C
r
3
+
(
0.1
M
)
|
|
F
e
2
+
(
0.01
M
)
|
F
e
(Given:
E
∘
C
r
3
+
/
C
r
=
−
0.75
v
o
l
t
;
E
∘
F
e
2
+
/
F
e
=
−
0.45
v
o
l
t
)
.
View Solution
Q2
Given
E
o
C
r
3
+
|
Cr
=
−
0.72
V
,
E
o
F
e
2
+
|
F
e
=
−
0.42
V.
The potential for the cell
Cr
|
C
r
3
+
(
0.1
M
)
∥
F
e
2
+
(
0.01
M
)
|
Fe is:
View Solution
Q3
Given,
E
∘
C
r
3
+
/
C
r
=
−
0.72
V
,
E
∘
F
e
2
+
/
F
e
=
−
0.42
V
.
The potential for the cell
C
r
|
C
r
3
+
(
0.1
M
)
|
|
F
e
2
+
(
0.01
M
)
|
F
e
is:
View Solution
Q4
Given
E
∘
C
r
3
+
/
C
r
=
−
0.72
,
E
∘
F
e
2
+
/
F
e
=
−
0.42
V
The potential for the cell,
C
r
|
C
r
3
+
(
0.1
M
)
|
|
F
e
2
+
(
0.01
M
)
|
F
e
is:
View Solution
Q5
Calculate e.m.f of the following cell at
298
K
:
2
C
r
(
s
)
+
3
F
e
2
+
(
0.1
M
)
→
2
C
r
3
+
(
0.01
M
)
+
3
F
e
(
s
)
Given:
E
(
C
r
3
+
|
C
r
)
=
−
0.74
V
E
(
F
e
2
+
|
F
e
)
=
−
0.44
V
View Solution