1.

When r,P and M represent rate of diffusion, pressure and molecular mass respectively, then the ratio of the rates of diffusion ( r_(A) //r_(B)) of two gases A and B , is given as :

Answer»

<P>`( P_(A) //P_(B)) ( M_(B)//M_(A)) ^(1//2)`
`( P_(A) //P_(B))^(1/2) ( M_(B)//M_(A))`
`( P_(A) //P_(B)) ( M_(A)//M_(B)) ^(1//2)`
`( P_(A) //P_(B))^(1/2) ( M_(A)//M_(B))`

Solution :`R PROP (p )/( SQRT(d))` or `prop ( p )/( sqrt( M ))`
`:. ( r_(A))/( r_(B)) = ( p_(A))/( p _(B)) = sqrt((M_(B))/( M_(A)))`


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