A compound of carbon, hydrogen, and nitrogen contains the three elements in the respective ratio of `9 : 1 : 3.5` Calculculate the empirical formula. If the molecular weight of the compound is 108, what its molecular formula?

Options

A. `C_(2)H_(4)N`
B. `C_(3)H_(4)N`
C. `C_(3)H_(6)N`
D. `C_(2)H_(6)N`

Answer

B

Explanation

The percentage (or mass) ratio `=9:1:3.5`
`:.` Mole ratio `= (9)/(12):(1)/(1):(3.5)/(14)`
`=0.75 :1:0.25`
`=3:4:1`
Hence, empirical formula `=C_(3)H_(4)N`