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Standard XII

Chemistry

Molecular Speeds - Vrms, Vavg, Vmps

The experimen...

Question

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 for X as compared to that of Y

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larger mean free path for Y as compared to that of X

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increased collision frequency of Y with the inert gas as compared to that X with the inert gas

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increased collision frequency of X with the inert gas as compared to that of Y with inert gas

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Solution

The correct option is C increased collision frequency of X with the inert gas as compared to that of Y with inert gas
The experimental value of d is found to be smaller than the estimate obtained using Graham's law. This is due to the increased collision frequency of X with the inert gas as compared to that of Y with inert gas.
With increase in the collision frequency, the molecular speed decreases then the expected so the distance covered will be less.

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