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From a certain appartus the diffusion ra...

From a certain appartus the diffusion rate of hydrogen has an average value of `28.7 cm^2.s^-1` The diffusion of another gas under the same conditions is measured to have an average rate of `7.2 cm^3.s^-1` Identify the gas.

Text Solution

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The correct Answer is:
oxygen
Use Graham.s law of diffusion `R_1//R_2=(M_2//M_1)^(1//2)` where `R_1,R_2` are diffusion rates of gases 1 and 2 and `M_1` and `M_2` their respective molecular masses. The law is a simple consequence of kinetic theory.
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