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Byju's Answer
Standard XII
Chemistry
Equilibrium Constant from Nernst Equation
ΔrGo for the ...
Question
Δ
r
G
o
for the cell with the cell reaction:
Z
n
(
s
)
+
A
g
2
O
(
s
)
+
H
2
O
(
l
)
→
Z
n
2
+
(
a
q
)
+
2
A
g
(
s
)
+
2
O
H
−
(
a
q
)
[
E
o
A
g
2
O
/
A
g
=
0.344
V
,
E
o
Z
n
2
+
/
Z
n
=
−
0.76
V
]
A
2.13
×
10
5
J
.
m
o
l
−
1
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B
−
2.13
×
10
5
J
.
m
o
l
−
1
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C
1.06
×
10
5
J
.
m
o
l
−
1
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D
−
1.06
×
10
5
J
.
m
o
l
−
1
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Solution
The correct option is
C
−
2.13
×
10
5
J
.
m
o
l
−
1
E
0
c
e
l
l
is given by,
E
0
c
e
l
l
=
E
0
A
g
2
O
/
A
g
−
E
0
Z
n
2
+
/
Z
n
=
0.344
−
(
−
0.76
)
=
1.104
V
We know,
Δ
G
=
−
n
F
E
0
c
e
l
l
=
−
2
×
96500
×
1.104
=
−
2.13
×
10
5
J
.
m
o
l
−
1
Suggest Corrections
0
Similar questions
Q.
Calculate
△
G
∘
for the following cell reaction:
Z
n
(
s
)
+
A
g
2
O
(
s
)
+
H
2
O
(
l
)
⇌
Z
n
2
+
(
a
q
)
+
2
A
g
(
s
)
+
2
O
H
−
(
a
q
)
E
∘
A
g
+
/
A
g
=
+
0.80
V
and
E
∘
Z
n
2
+
/
Z
N
=
−
0.76
V
.
Q.
A button cell used in watches functions as following:
Z
n
(
s
)
+
A
g
2
O
(
s
)
+
H
2
O
(
l
)
⇌
2
A
g
(
s
)
+
Z
n
2
+
(
a
q
)
+
2
O
H
−
(
a
q
)
If half cell potentials are:
Z
n
2
+
(
a
q
)
+
2
e
−
→
Z
n
(
s
)
;
E
∘
=
−
0.76
V
A
g
2
O
(
s
)
+
H
2
O
(
l
)
+
2
e
−
→
2
A
g
(
s
)
+
2
O
H
−
(
a
q
)
,
E
∘
=
0.34
V
The cell potential will be:
Q.
A button cell used in watches functions as following:
Z
n
(
s
)
+
A
g
2
O
(
s
)
+
H
2
O
(
l
)
⇌
2
A
g
(
s
)
+
Z
n
2
+
(
a
q
)
+
2
O
H
−
(
a
q
)
If half cell potentials are:
Z
n
2
+
(
a
q
)
+
2
e
→
Z
n
(
s
)
;
E
0
=
−
0.76
V
A
g
2
O
(
s
)
+
H
2
O
(
l
)
2
e
→
2
A
g
(
s
)
+
2
O
H
−
(
a
q
)
,
E
0
=
0.34
V
The cell potential will be:
Q.
Calculate
Δ
G
for the following cell reaction.
Z
n
(
s
)
+
A
g
2
O
(
s
)
+
H
2
O
(
l
)
→
Z
n
2
+
(
a
q
)
+
2
A
g
(
s
)
+
2
O
H
−
(
a
q
)
E
0
A
g
+
/
A
g
=
+
0.80
V
and
E
0
Z
n
+
2
/
Z
n
=
−
0.76
V
Q.
Calculate the equilibrium constant for the reaction,
Z
n
(
s
)
+
A
g
2
O
(
s
)
+
H
2
O
(
l
)
→
2
A
g
(
s
)
+
Z
n
2
+
(
a
q
.
)
+
2
O
H
−
(
a
q
.
)
when
E
∘
c
e
l
l
=
1.11
at
298
K
.
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