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Byju's Answer
Standard IX
Chemistry
Valency and Oxidation State
In the reacti...
Question
In the reaction,
I
2
+
2
N
a
2
S
2
O
3
→
2
N
a
I
+
N
a
2
S
4
O
6
,
equivalent weight of Iodine is:
A
M
o
l
e
c
u
l
a
r
w
e
i
g
h
t
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B
M
o
l
e
c
u
l
a
r
w
e
i
g
h
t
2
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C
M
o
l
e
c
u
l
a
r
w
e
i
g
h
t
4
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D
M
o
l
e
c
u
l
a
r
w
e
i
g
h
t
3
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Solution
The correct option is
B
M
o
l
e
c
u
l
a
r
w
e
i
g
h
t
2
Oxidation state of
I
changes from
0
to
−
1
.
Therefore, change in oxidation state is
1
.
Change, per mole of iodine molecule is
1
×
2
(as we have two atoms of I)
=
2
.
So, Eq. Wt is
=
m
o
l
e
c
u
l
a
r
w
e
i
g
h
t
2
.
Suggest Corrections
0
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(b)
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If true enter 1, else enter 0.
Q.
In the following reaction:
2
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⟶
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Q.
The equivalent weight of hypo in the reaction [M = Molecular Weight]
2
N
a
2
S
2
O
3
+
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a
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a
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Q.
The equivalent weight of
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