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Byju's Answer
Standard X
Chemistry
Electrolytic Refining of Copper
When an aqueo...
Question
When an aqueous solution of
C
u
S
O
4
is stirred with a silver spoon then:
A
C
u
+
will be formed
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B
A
g
+
will be formed
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C
C
u
2
+
will be deposited
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D
none of these
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Solution
The correct option is
D
none of these
Electro-chemical reactivity of
C
u
>
A
g
⇒
A
g
cannot displace
C
u
from its aqueous salt solution
⇒
when a silver spoon immersed in
C
u
S
O
4
solution, nothing happens
A
g
+
C
u
S
O
4
→
no reaction
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0
Similar questions
Q.
An aqueous solution of
C
u
S
O
4
is stirred with a silver spoon. The following will happen-
Q.
C
u
2
+
ions will be reduced to
C
u
+
ions by the addition
of an aqueous solution of_________.
Q.
In an aqueous solution of volume
500
m
L
, when the reaction of
2
A
g
+
+
C
u
⇌
C
u
2
+
+
2
A
g
reached equilibrium the
[
C
u
2
+
]
was
x
M
. When
500
m
L
of water is further added, at the equilibrium
[
C
u
2
+
]
will be :
Q.
The stoichiometric coefficient of
N
O
⊖
3
in the balanced chemical reaction, when copper reacts with nitric acid, a brown gas is formed and solution turns blue, will be :
C
u
+
N
O
⊖
3
⟶
N
O
2
+
C
u
2
+
Q.
Answer, whether under standard conditions, the following reactions are possible or not:
(i) Will copper reduce
A
g
+
to
A
g
? Given:
E
∘
A
g
+
/
A
g
=
0.799
v
o
l
t
;
E
∘
C
u
2
+
/
C
u
=
0.337
v
o
l
t
.
(ii) Will
F
e
3
+
be reduced to
F
e
2
+
by
S
n
2
+
ion? Given:
F
e
3
+
/
F
e
2
+
=
0.771
v
o
l
t
;
S
n
2
+
/
S
n
4
+
=
−
0.250
v
o
l
t
(iii) Would you use a silver spoon to stir a solution of
C
u
(
N
O
3
)
2
?
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