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Byju's Answer
Standard XII
Chemistry
Faraday's First Law
20.Calculate ...
Question
20.Calculate Ecell Pt/ H2 (2 atm) / HCl (10³-) || HCl (3×10²- M)/ H2(4 atm)/ Pt
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Q.
For the cell Pt |
H
2
(0.4 atm) |
H
+
(pH = 1) || (pH = 2) |
H
2
90.1 atm) | Pt. The measured potential at
25
∘
C
is:
Q.
Calculate the pH of following solutions:
Pt,
H
2
|
H
C
l
,
E
=
0.25
V
Q.
P
t
(
H
2
)
|
H
+
(
p
H
=
2
)
|
H
+
(
p
H
=
3
)
|
P
t
(
H
2
)
1 atm 1 atm
The cell reaction for the given cell is:
Q.
For the cell
P
t
|
H
2
(
1
a
t
m
)
|
H
C
l
(
0.01
M
)
|
|
H
C
l
(
p
H
=
X
)
|
H
2
(
0.01
a
t
m
)
|
P
t
. Calculate x, when there is no flow of electricity.
Q.
Calculate
E
c
e
l
l
.
P
t
(
s
)
|
H
2
(
g
)
1
a
t
m
|
H
A
(
K
a
=
10
−
7
)
1
M
|
|
H
B
(
K
a
=
10
−
5
)
1
M
|
H
2
(
g
)
1
a
t
m
|
P
t
(
s
)
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