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Byju's Answer
Standard XII
Chemistry
General Mechanism of Electrophilic Aromatic Substitution
What is the s...
Question
What is the standard reduction potential at
25
0
C for the reduction of water?
Open in App
Solution
H
2
O
→
H
2
+
1
2
O
2
Since reduction potential is considered to be zero at
25
0
C
at 1M concentration for above reaction (Assumption by IUPAC),so
E
0
=
z
e
r
o
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Similar questions
Q.
The standard reduction potential at
25
0
C for the reduction of water
2
H
2
O
+
2
e
−
⇌
H
2
+
2
O
H
−
is -0.8277 volt. Calculate the equlibrium constant for the reaction
2
H
2
O
⇌
H
3
O
+
+
O
H
−
at
25
0
C.
Q.
The standard reduction potential of
C
u
2
+
/
C
u
couple is
0.34
V at
25
0
C. Calculate the reduction potential at
p
H
=
14
for this couple.
Given
K
s
p
of
C
u
(
O
H
)
2
=
1.0
×
10
−
18
)
Q.
The standard reduction potential at
25
o
C for the reduction of water
2
H
2
O
+
2
e
⇌
H
2
+
2
O
H
is
−
0.8277
volt. Calculate the equilibrium constant for the reaction
2
H
2
O
⇌
H
3
O
+
+
O
H
at
25
o
C.(Answer up to 2 decimal places.)
Q.
The standard reduction potential for
C
u
2
+
/
C
u
is
+
0.34
V. What will be the reduction potential at pH
=
14
? [Given:
K
s
p
of
C
u
(
O
H
)
2
is
1.0
×
10
−
19
]
.
Q.
The standard reduction potential for
C
u
2
+
1
C
u
is +0.34 V. The reduction potential at pH = 14 for the above couple is:
K
s
p
of
C
u
(
O
H
)
2
i
s
1.0
×
10
−
19
.
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