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Standard XII
Chemistry
Kinetic Theory of Gases
During separa...
Question
During separation of
C
O
2
and hydrogen gas by diffusion the gas that diffuses rapidly is:
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Solution
Diffusion coefficient=D=
1
3
¯
c
l
[l=length of the plane]
¯
c
=average speed=
√
8
R
T
π
M
So,
D
∝
1
√
M
at given temperature.
Since,
M
C
O
2
>
M
H
2
,
∴
D
H
2
>
D
C
O
2
∴
H
2
gas diffuses rapidly.
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