Question:

# X and Y are two volatile liquids with molar weights of 10 g

Last updated: 7/4/2023

X and Y are two volatile liquids with molar weights of 10 g mol and 40 g mol 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 L 24 cm Cotton wool soaked in X 2 Initial formation of the product Choose the correct answer The value of d in cm shown in the figure as estimated from Graham s law is 1 8 3 16 Cotton wool soaked in Y 2 12 4 20 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 X as compared to that of Y 2 Larger mean free path for Y as compared to that of X 3 Increased collision frequency of Y with the inert gas as compared to that of X with the inert gas 4 Increased collision frequency of Y with the