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Question

During separation of CO2 and hydrogen gas by diffusion, the gas that diffuses rapidly is _________ . (CO2/ hydrogen gas)

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Solution

The rate of diffusion is inversely proportional to the square root of molar mass.
Hydrogen gas has a lower molar mass and CO2 gas having higher molar mass. So, hydrogen gas diffuses rapidly as compare to CO2 gas.

So, the correct answer is hydrogen.

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