Two gases A and B having the same volume diffuse through a porous partition in 20 and 10 seconds respectively. The molecular mass of A is 49 u . Molecular mass of B will beNEET 2011 (Screening)

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r B ​ r A ​ ​ = M A ​ M B ​ ​ ​ or t A ​ V A ​ ​ × V B ​ t B ​ ​ = M A ​ M B ​ ​ ​ or 20 10 ​ = 49 M B ​ ​ ​ or 4 1 ​ = 49 M B ​ ​ ∴ M B ​ = 4 49 ​ = 12.25 u .

Chemistry - Ideal Gas Question with Solution | TestHub

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