Froma certain apparatus, the diffusion rate of hydrogen has an average

1.	Froma certain apparatus, the diffusion rate of hydrogen has an averagevalue of 28.7 cm3s–1.The diffusion of another gas under the same conditions is measured tohave an average rate of 7.2 cm3s–1.Identify the gas.[Hint:Use Graham’s law of diffusion: R1/R2= (M2/M1)1/2,where R1,R2are diffusion rates of gases 1 and 2, and M1and M2their respective molecular masses. The law is a simple consequence ofkinetic theory.]
Answer» From a certain apparatus, the diffusion rate of hydrogen has an average value of 28.7 cm³ s^–1. The diffusion of another gas under the same conditions is measured to have an average rate of 7.2 cm³ s^–1. Identify the gas. [Hint: Use Graham’s law of diffusion: R₁/R₂ = (M₂/M₁)^1/2, where R₁, R₂ are diffusion rates of gases 1 and 2, and M₁ and M₂ their respective molecular masses. The law is a simple consequence of kinetic theory.]

Froma certain apparatus, the diffusion rate of hydrogen has an averagevalue of 28.7 cm3s–1.The diffusion of another gas under the same conditions is measured tohave an average rate of 7.2 cm3s–1.Identify the gas.[Hint:Use Graham’s law of diffusion: R1/R2= (M2/M1)1/2,where R1,R2are diffusion rates of gases 1 and 2, and M1and M2their respective molecular masses. The law is a simple consequence ofkinetic theory.]

Answer»

From
a certain apparatus, the diffusion rate of hydrogen has an average
value of 28.7 cm³
s^–1.
The diffusion of another gas under the same conditions is measured to
have an average rate of 7.2 cm³
s^–1.
Identify the gas.

[Hint:
Use Graham’s law of diffusion: R₁/R₂
= (M₂/M₁)^1/2,
where R₁,
R₂
are diffusion rates of gases 1 and 2, and M₁
and M₂
their respective molecular masses. The law is a simple consequence of
kinetic theory.]

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