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Tardigrade
Question
Chemistry
50 ml. of H2SO4 require 10 gm CaCO3 for complete decomposition. The normality of acid is:
Q.
50
m
l
.
of
H
2
S
O
4
require
10
g
m
C
a
C
O
3
for complete decomposition. The normality of acid is:
2138
180
Manipal
Manipal 2002
Report Error
A
2
B
0.30
C
4
D
0.20
Solution:
∵
100
g
m
C
a
C
O
3
=
98
g
m
H
2
S
O
4
∴
10
g
m
C
a
C
O
3
=
100
98
×
10
=
9.8
g
m
of
H
2
S
O
4
∴
50
m
l
of solution have
9.8
g
m
of
H
2
S
O
4
∴
1000
m
l
of solution have
=
50
9.8
×
1000
=
196
g
m
of
H
2
S
O
4
We know that
N
=
equivalent weight
W
×
V
1000
=
49
×
1000
196
×
1000
=
4
∴
N
=
4
