The empirical formula fo a compound is `CH_(2)O`. Its vapor density is `30`. It reacts with sodium metal. The compound is

Options

A. `HCOOCH_(3)`
B. `CH_(2)O`
C. `CH_(3)CH_(2) COOH`
D. `CH_(3)COOH`

Answer

D

Explanation

`MF = n xx EF`
`n = ("Molecular mass")/(EFM) = (2 xx "Vapor density")/(EFM), n = 2`
`:. MF = C_(2) H_(4) O_(2)`
Since the compound contains acidic `H` atom, it is acetic acid,.
`CH_(3) COOH + Na rarr (1)/(2) H_(2) + CH_(3) COONa`