At identical temperature and pressure the rate of diffusion of hydrogen gas is `3sqrt3` times that of a hydrocarbon having molecular formula `C_(n)H_(2n-2)` What is the value of n ? .

Options

A. 1
B. 4
C. 3
D. 8

Answer

b

Explanation

(b) `(r_(H_(2)))/(r_("H.C"))=sqrt((M)/(2))=3sqrt(3)`
`(M)/(2)=9xx3`
`M=54`
`n=4`