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Question
Chemistry
The quantity of CO 2 in 500 mL of soda water when packed under 3.34 bar CO 2 pressure at 298 K in g is
Q. The quantity of
C
O
2
in
500
m
L
of soda water when packed under
3.34
bar
C
O
2
pressure at
298
K
in
g
is
2685
209
AP EAMCET
AP EAMCET 2018
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A
2.442
B
1.221
C
4.884
D
3.663
Solution:
Given, Quantity of
C
O
2
=
500
m
L
Pressure of
C
O
2
=
3.34
bar
Temperature
=
298
K
in Henry's law
p
=
K
H
X
×
(
x
)
X
=
K
H
p
=
3.34
ba
r
=
334000
P
a
=
1.67
×
1
0
8
3.34
×
1
0
1
=
2.442
P
a
But, we have
500
m
L
of soda water so that
Volume of water
=
500
m
L
Density of water
=
1
g
/
m
L
Formula mass
=
volume
×
density we get
500
m
L
of water
=
500
g
of water
Molar mass of water
=
18
g
/
m
o
l
−
1
18
500
=
27.78
mole
μ
of water
x
=
n
C
O
2
+
n
H
2
O
n
C
O
2
Value of moles fraction is very small so it is negligible as compared to 1 we get,
x
=
n
H
2
O
n
C
O
2
=
2
×
1
0
−
7
Molar mass of
C
O
2
is after calculation
=
2.442
g