Question

At STP one litre of a gas weight `1.25` grams. The gas contains `85.71%` of carbon and `14.29%` of hydrogen. The formula of the compound is
A. `CH_(4)`
B. `C_(2)H_(6)`
C. `C_(3)H_(8)`
D. `C_(2)H_(4)`

Answer 1

Correct Answer - D
`1L rarr 1.25 gm`
`22.4L` gives Molecular Wt.
`M.F = E.F xx (MW)/(EF Wt.)`