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Byju's Answer
Standard XII
Chemistry
Percentage Composition
H2SO4 is 98
Question
H
2
S
O
4
is 98% by weight of solution,
M
x
10
2
. What is the value of M?
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Solution
98
% by weight means
98
g
m
H
2
S
O
4
in
2
g
water.
Mass of solution=
100
=
1
×
10
2
M
=
1
.
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Similar questions
Q.
H
2
S
O
4
is
98
%
by weight of solution .Hence it is
?
Q.
Commercially available
H
2
S
O
4
is
98
gms by weight of
H
2
S
O
4
and
2
gms by weight of water. It's density is
1.83
g
c
m
−
3
. Calculate the molality (m) of
H
2
S
O
4
solution.
[Take : Molar mass of
H
2
S
O
4
as
98
g
m
o
l
−
1
].
Q.
H
2
S
O
4
solution is
98
%
by weight of solution with density
1.8
g
m
L
−
1
. Express concentration as percent
H
2
S
O
4
weight by volume of solution.
Q.
What is the molarity of a
30
% (vol/vol) solution of
H
2
S
O
4
? (Molecular weight of
H
2
S
O
4
=
98
; density of
H
2
S
O
4
=
1.8
g
/
m
l
)
Q.
What is the molarity of
H
2
S
O
4
solution, that has a density
1.84
g
m
/
c
c
at
35
∘
C
and contains solute
98
%
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