Explanation The diffusion and effusion is an example of Brownian motion of gas molecules as shown in the figure. The postulates of Brownian motions are i) This motion is spontaneous, continuous and invariable. ii) The motion does not depend upon the vibration of the vessel. iii) The motion increases with the increment of temperature. iv) The motion increases as the size of the particle decreases. As per the Graham’s law the rate of effusion of different gasses is inversely proportional to the square root of their density at constant temperature and pressure. Formula used: The mathematical expression of Graham’s law is r ∞ 1 d , (where r and d is the rate of effusion and density of the gas) or, r = K d (where K is a constant) and Density ( d ) = Molar Mass ( M ) Molar Volume ( V ) Calculation: b. We assume r 1 and r 2 are rate of effusion constant of two gases having densities d 1 and d 2 at constant temperature (T) and pressure (P)...

Chemistry: Structure and Properties (2nd Edition)

2nd Edition

ISBN: 9780134293936

Author: Nivaldo J. Tro

Publisher: PEARSON

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Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases…

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Chapter 10, Problem 22E

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To determine: The difference between diffusion and effusion and relation of effusion rate with the molar mass of gas molecules.

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Chapter 10, Problem 21E

Chapter 10, Problem 23E

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Chemistry: Structure and Properties (2nd Edition)

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The difference between diffusion and effusion and relation of effusion rate with the molar mass of gas molecules.

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To determine: The difference between diffusion and effusion and relation of effusion rate with the molar mass of gas molecules.

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Chapter 10 Solutions