
(a)
Interpretation:
The diffusion constant for
Concept introduction:
The diffusion of any gas particle among its own gas particles is known as self-diffusion. The diffusion constant is directly proportional to the product of mean free path and average velocity. The self-diffusion of a particle is given as,
Where,
•
•
•
•
•
•

Answer to Problem 19.62E
The diffusion constant of helium is
Explanation of Solution
It is given that the helium is at
The diffusion constant can be calculated by the formula,
Where,
•
•
•
•
•
•
The diffusion constant can be represented in the terms of pressure as,
Substitute the values of molar mass, diameter, pressure, gas constant and temperature.
The unit of pressure is converted from
The conversion factor of
Substitute the units of pressure and solve the square root as shown below.
The units of diffusion constant are usually expressed in
The diffusion constant of helium is
(b)
Interpretation:
The diffusion constant for
Concept introduction:
The diffusion any gas particle among its own gas particles is known as self-diffusion. The diffusion constant is directly proportional to the product of mean free path and average velocity. The self-diffusion of a particle is given as,
Where,
•
•
•
•
•
•

Answer to Problem 19.62E
The diffusion constant of xenon is
Explanation of Solution
It is given that the xenon is at
The diffusion constant can be calculated by the formula,
Where,
•
•
•
•
•
•
The diffusion constant can be represented in the terms of pressure as,
Substitute the values of molar mass, diameter, pressure, gas constant and temperature.
The units of pressure are converted from
The conversion factor of
Substitute the units of pressure and solve the square root as shown below.
The units of diffusion constant are usually expressed in
The diffusion constant of xenon is
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Chapter 19 Solutions
Physical Chemistry
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