A, B and C are ideal gases. Their molecular weights are 2, 4 and 28 respectively. The rate of diffusion of these gases follow the order
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Explanation:
According to the Graham's law of diffusion, the rates of diffusion of two gases are directly proportional to their partial pressures and inversely proportional to their molecular weights.
The expression for the relative rates of diffusion of two gases is
r
B
r
A
=(
P
B
P
A
)(
M
A
M
B
)
2
1
.
Here, r
A
and r
B
are the rates of diffusion of two gases A and B respectively,
P
A
and P
B
are their partial pressures and M
A
and M
B
are their molecular weights respectively.
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