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Byju's Answer
Standard XII
Chemistry
Concentration Terms - An Introduction (w/w etc)
100 ml of ...
Question
100
m
l
of
0.1
M
H
2
S
O
4
and
100
m
l
of 0.1M KOH are mixed together and diluted to exactly two litres. Normality of unreacted acid in the mixture is:
A
2
×
10
−
3
N
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B
5
×
10
−
3
N
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C
5
×
10
−
2
N
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D
2
×
10
−
2
N
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Solution
The correct option is
C
5
×
10
−
2
N
moles of unreacted acid
=
0.1
×
0.1
×
2
−
0.1
×
0.1
=
0.005
equivalents of unreacted acid
=
0.005
×
2
=
0.01
Normality
=
0.01
0.2
=
5
×
10
−
2
N
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