X and Y are two volatile liquids with molar weights of 10 g mol –1 and 40 g mol –1…
Chemistry · JEE Advanced · NTA Exams — Some Basic Concepts in Chemistry
X and Y are two volatile liquids with molar weights of 10 g mol–1 and 40 g mol–1 respectively. Two cotton plugs, one soaked in X and the other soaked in Y, are simultaneously placed at the ends of a tube of length
L = 24 cm, as shown in the figure. The tube is filled with an inert gas at 1 atmosphere pressure and a temperature of
300 K. Vapours of X and Y react to form a product which is first observed at a distance d cm from the plug soaked in X. Take X and Y to have equal molecular diameters and assume ideal behaviour for the inert gas and the two vapours.
The experimental value of d is found to be smaller than the estimate obtained using Graham’s law. This is due to
L = 24 cm, as shown in the figure. The tube is filled with an inert gas at 1 atmosphere pressure and a temperature of
300 K. Vapours of X and Y react to form a product which is first observed at a distance d cm from the plug soaked in X. Take X and Y to have equal molecular diameters and assume ideal behaviour for the inert gas and the two vapours.
The experimental value of d is found to be smaller than the estimate obtained using Graham’s law. This is due to
- larger mean free path of X as compared to that of Y
- larger mean free path for Y as compared to that of X
- increased collision frequency of Y with the inert gas as compared to that of X with the inert gas
- increased collision frequency of X with the inert gas as compared to that of Y with the inert gas.
Answer
(D) increased collision frequency of X with the inert gas as compared to that of Y with the inert gas.
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