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Byju's Answer
Standard XII
Chemistry
EMF
For the react...
Question
For the reaction.
2
A
g
C
l
(
s
)
+
H
2
(
g
)
(
1
a
t
m
)
→
2
A
g
(
s
)
+
2
H
+
(
0.1
M
)
+
2
C
l
−
(
0.1
M
)
,
Δ
G
o
=
−
43600
J at
25
o
C.
Calculate the e.m.f of the cell.
[
l
o
g
10
−
n
=
−
n
]
.
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Solution
Δ
G
o
=
−
n
F
E
0
c
e
l
l
−
43600
=
−
2
×
96500
×
E
0
c
e
l
l
E
0
c
e
l
l
=
0.23
V
E
c
e
l
l
=
E
0
c
e
l
l
−
0.0591
n
l
o
g
10
[
H
+
]
2
[
C
l
−
]
2
P
H
2
E
c
e
l
l
=
0.23
V
−
0.0591
2
l
o
g
10
[
0.1
]
2
[
0.1
]
2
1
E
c
e
l
l
=
0.348
V
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Similar questions
Q.
(a) For the reaction
2
A
g
C
I
(
s
)
+
H
2
(
g
)
(
1
a
t
m
)
⟶
2
A
g
(
s
)
+
2
H
+
(
0.1
M
)
+
2
C
I
−
(
0.1
M
)
,
Δ
G
∘
= - 43600 J at
25
∘
C
.
Calculate the e.m.f. of the cell
[
l
o
g
10
−
n
=
−
n
]
(b) Define fuel cell and write its two advantages.
Q.
(a) For the reaction
2
A
g
C
I
(
s
)
+
H
2
(
g
)
(
1
a
t
m
)
⟶
2
A
g
(
s
)
+
2
H
+
(
0.1
M
)
+
2
C
I
−
(
0.1
M
)
,
Δ
G
∘
= - 43600 J at
25
∘
C
.
Calculate the e.m.f. of the cell
[
l
o
g
10
−
n
=
−
n
]
(b) Define fuel cell and write its two advantages.
Q.
For the reaction,
Δ
G
0
=
−
42927
joules at
25
0
C
.
H
2
(
g
,
1
a
t
m
)
+
2
A
g
C
l
(
s
)
⇌
2
A
g
(
s
)
+
2
H
+
(
a
q
,
0.1
M
)
+
2
C
l
−
(
a
q
,
0.1
M
)
Calculate the emf of the cell of given reaction.
Q.
Δ
G
o
for the reaction:
A
g
C
l
(
s
)
+
1
/
2
H
2
(
g
)
⟶
A
g
(
s
)
+
H
+
+
C
l
−
is
−
21.52
k
J
Δ
G
o
for the reaction:
2
A
g
C
l
(
s
)
+
H
2
(
g
)
→
2
A
g
(
s
)
+
2
H
+
+
2
C
l
−
is:
Q.
Δ
G
∘
of the cell reaction,
A
g
C
l
(
s
)
+
1
2
H
2
(
g
)
→
A
g
(
s
)
+
H
+
+
C
l
−
is
−
21.52
K
J
.
Δ
G
∘
of
2
A
g
C
l
(
s
)
+
H
2
(
g
)
→
2
A
g
(
s
)
+
2
H
+
2
C
l
−
is:
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