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Byju's Answer
Standard XII
Chemistry
Ion Electron Method
2 Fe 3+ aq +2...
Question
2
F
e
3
+
(
a
q
)
+
2
I
⊖
(
a
q
)
⟶
I
2
(
a
q
)
+
2
F
e
2
+
(
a
q
)
In the following reaction, which element is oxidized?
A
I
−
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B
F
e
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C
F
e
+
3
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D
I
2
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Solution
The correct option is
A
I
−
The reaction is given below:
2
F
e
3
+
(
a
q
)
+
2
I
⊖
(
a
q
)
⟶
I
2
(
a
q
)
+
2
F
e
2
+
(
a
q
)
+3 -1 0 +2
I
⊖
is oxidised to
I
2
.
F
e
3
+
is the oxidising agent.
F
e
3
+
is reduced to
F
e
2
+
.
I
−
is the reducing agent.
Hence, the element Zn is oxidized. Thus, option A is the correct answer.
Suggest Corrections
1
Similar questions
Q.
2
F
e
3
+
(
a
q
)
+
2
I
⊖
(
a
q
)
⟶
I
2
(
a
q
)
+
2
F
e
2
+
(
a
q
)
Q.
The cell in which the following reaction occurs:
2
F
e
3
+
(
a
q
)
+
2
I
−
(
a
q
)
→
2
F
e
2
+
(
a
q
)
+
I
2
(
s
)
has
E
o
c
e
l
l
=
0.236
V
at
298
K
.
The equilibrium constant of the cell reaction is:
Q.
For the reaction
2
F
e
3
+
(
a
q
)
+
2
I
–
(
a
q
)
→
2
F
e
2
+
(
a
q
)
+
I
2
(
s
)
The magnitude of the standard molar free energy change,
Δ
r
G
0
m
=
–
______kJ (Round off the Nearest Integer).
E
0
F
e
2
+
/
F
e
(
s
)
=
−
0.440
V
E
0
F
e
3
+
/
F
e
(
s
)
=
−
0.036
V
E
0
I
2
/
2
I
−
=
0.539
V
F
=
96500
C
Q.
The cell in which the following reaction occurs:
2
F
e
3
+
(
a
q
)
+
2
I
−
(
a
q
)
→
2
F
e
2
+
(
a
q
)
+
I
2
(
s
)
has
E
∘
c
e
l
l
=
0.236
V
at
298
K
.
Calculate the standard Gibbs energy of the cell reaction. (Given :
1
F
=
96
,
500
C
m
o
l
−
1
)
Q.
What is `A' in the following reaction
2
F
e
3
+
(
a
q
)
+
S
n
2
+
(
a
q
)
→
2
F
e
2
+
(
a
q
)
+
A
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