1.

At identical temperature and pressure, the rate of diffusion of hydrogen gas is 3sqrt(3) times that of a hydrocarbon having molecular formula C_(n)H_(2n-n). What is the value of n?

Answer»


Solution :`(r_(H_(2)))/(r_(HC))=SQRT((M_(HC))/(M_(H_(2))))IMPLIES 3sqrt(3) = sqrt((M_(HC))/(2))` or
`M_(HC)=(3sqrt(3))^(2)xx2=54`
`:. c_(n)H_(2n-2),12 xxn+(2n-2)=54 ` or `n=4`


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