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Byju's Answer
Standard XII
Chemistry
SHE
For the dispr...
Question
For the disproportionation of copper :
2
C
u
+
→
C
u
+
2
+
C
u
,
E
∘
is:
Given;
E
for
C
u
+
2
/
C
u
is
0.34
V
and
E
for
C
u
+
2
/
C
u
+
is
0.15
V
A
0.49
V
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B
0.19
V
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C
0.38
V
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D
−
0.38
V
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Solution
The correct option is
C
0.38
V
Suggest Corrections
3
Similar questions
Q.
If for the half cell reactions
C
u
2
+
+
e
−
→
C
u
+
E
o
=
0.15
V
C
u
2
+
+
2
e
−
→
C
u
E
o
=
0.34
V
Calculate
E
o
of the half cell reaction
C
u
+
+
e
−
→
C
u
also predict whether
C
u
+
undergoes disproportionation or not.
Q.
C
u
+
is not stable and undergoes disproportionation.
E
o
for
C
u
+
disproportionation is :
(
E
o
C
u
2
+
/
C
u
+
=
+
0.153
V
,
E
o
C
u
+
/
C
u
=
0.53
V
)
Q.
C
u
+
(
a
q
)
is unstable in solution and undergoes simultaneous oxidation and reduction, according to the reaction:
2
C
u
+
(
a
q
)
⇌
C
u
2
+
(
a
q
)
+
C
u
(
s
)
choose correct
E
o
for above reaction if
E
o
C
u
2
+
/
C
u
=
0.34
V
and
E
o
C
u
2
+
/
C
u
+
=
0.15
V
Q.
C
u
+
is not stable and undergoes disproportionation.
E
0
for
C
u
+
disproportionation is :
Given standard reduction potentials,
E
0
C
u
2
+
/
C
u
+
=
+
0.15
V
E
0
C
u
+
/
C
u
=
0.53
V
Q.
C
u
+
ion is not stable in aqueous solution because of disproportionation reaction.
E
∘
value for disproportionation of
C
u
+
(given
E
∘
C
u
2
/
C
u
=
0.34
V
)
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