1. Tardigrade
  2. Question
  3. Chemistry
  4. The experimental value of d is found to be smaller than the estimate obtained using Graham's law. This is due to (1) larger mean free path for A as a compared of that of Y (2) larger mean free path for Y as compared to that of A (3) increased collision frequency of Y with the inert gas as compared to that of A with the inert gas (4) increased collision frequency of A with the inert gas as compared to that of Y with the inert gas

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Q. The experimental value of $d$ is found to be smaller than the estimate obtained using Graham's law. This is due to
(1) larger mean free path for A as a compared of that of Y
(2) larger mean free path for Y as compared to that of A
(3) increased collision frequency of Y with the inert gas as compared to that of A with the inert gas
(4) increased collision frequency of A with the inert gas as compared to that of Y with the inert gas

JEE AdvancedJEE Advanced 2014States of Matter

Solution:

$x$ is a lighter gas thany, hencex has greater molecular speed. Due to greater molecular speed of $x$, it will have smaller mean free path and greater collision frequency with the inert gas molecules. As a result .v will take more time to travel a given distance along a straight line. Hence $x$ and $y$ will meet at a distance smaller than one calculated from Graham's law.