The empirical formula and molecular mass of a compound are `CH_(2)O` and 180 g respectively. What will be the molecular formula of the compound ?

Options

A. `C_(9)H_(18) O_(9)`
B. `CH_(2)O`
C. `C_(6)H_(12)O_(6)`
D. `C_(2)H_(4)O_(2)`

Answer

C

Explanation

Empirical formula mass `=CH_(2)O`
`=12 + 2 xx 1 + 16 = 30`
Molecular mass = 180
`n= "molecular mass"/"Empirical formula mass"`
`= 180/ 30 = 6`
`therefore` Molecular formula `= n xx` empirical formula
` = 6 xx CH_(2) O = C_(6) H_(12) O_(6)`