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(i) Write down the van der waals gas equ...

(i) Write down the van der waals gas equation.
(ii) What will be the ratio of diffusion of `""^(235)UF_(6) and ""^(238)UF_(6)` ?

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(ii) Let, the rate of diffusion of `""^(235)UF_(6) and ""^(238)UF_(6)` be `r_(1) and r_(2)`.
According to Graham's law, `(r_(1))/(r_(2))=sqrt((M_(2))/(M_(1)))`
`M_(1)=`Molecular mass of `'"^(235)UF_(6)=349g*mol^(-1)`
`M_(2)=`molecular mass of `""^(238)UF_(6)=352g*mol^(-1)`
`therefore r_(1)/r_(2)=sqrt((352)/(349))=1.004`
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