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Equal volumes of two gases A and B diffuse through a porous pot in 20 and 10 seconds respectively. If molar mass of A is 80 calculate the molar mass of B. |
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Answer» SOLUTION :Suppose volume of each gas DIFFUSED = V mL Then by Graham.s Law `=(r_(A))/(r_(B))=(((V)/(20))/((V)/(10)))=sqrt((M_(B))/(M_(A))) rArr 1//2 =sqrt((M_(B))/(80))` `therefore M_(B) =20 GMOL^(-1)` |
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