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Byju's Answer
Standard XII
Chemistry
Molarity
25 cm 3 of ox...
Question
25
c
m
3
of oxalic acid completely neutralised
0.064
g
of sodium hydroxide. Molarity of the oxalic acid solution is :
A
0.045
M
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B
0.032
M
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C
0.064
M
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D
0.015
M
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Solution
The correct option is
B
0.032
M
(
C
O
O
H
)
2
+
2
N
a
O
H
→
(
C
O
O
N
a
)
2
+
2
H
2
O
Moles of
N
a
O
H
=
0.064
40
=
1.6
×
10
−
3
m
o
l
e
s
Moles of
(
C
O
O
H
)
2
=
1
2
m
o
l
e
s
o
f
N
a
O
H
=
0.8
×
10
−
3
m
o
l
e
s
M
=
m
o
l
e
s
V
=
0.8
×
10
−
3
25
×
10
−
3
=
0.032
M
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