Chemistry - Ideal Gas Question with Solution | TestHub

ChemistryIdeal GasGraham's Law of Diffusion/EffusionEasy2 minQB

ChemistryEasysingle choice

4 gm $He$ effuses in 6 min, then how long will 32 gm $S O_{2}$ take to effuse under the same conditions -

Answer:

Solution:

Compare the rates in moles per minute. 4 g $He$ = 1 mol, so r( $He$ ) = 1/6 mol/min.

Graham's law: r( $S O_{2}$ )/r( $He$ ) = $4/64$ = 1/4, so r( $S O_{2}$ ) = 1/24 mol/min.

32 g $S O_{2}$ = 0.5 mol, so t = 0.5 x 24 = 12 min.

Answer: (B).

Stream:JEESubject:ChemistryTopic:Ideal GasSubtopic:Graham's Law of Diffusion/Effusion

⏱ 2mℹ️ Source: QB

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