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JEE Advanced2014ChemistryStates of MatterActual

Paragraph: 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 obs

Options

  1. ALarger mean free path for X as compared to that of Y.
  2. BLarger mean free path for Y as compared to that of X.
  3. CIncreased collision frequency of Y with the inert gas as compared to that of X with the inert gas.
  4. DIncreased collision frequency of X with the inert gas as compared to that of Y with the inert gas.

Correct answer

D. Increased collision frequency of X with the inert gas as compared to that of Y with the inert gas.

Step-by-step solution

As the collision frequency increases then molecular speed decreases than the expected.

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