$M=23.2=46$
CT chung; $C_xH_yO_z$
- Khi $z=1$:
$\Rightarrow 12x+y=30$
$\Rightarrow x=2; y=6$ ($C_2H_6O$)
- Khi $z=2$:
$\Rightarrow 12x+y=14$
$\Rightarrow x=1; y=2$ ($CH_2O_2$)
- Khi $z=3$
$\Rightarrow 12x+y=-2$ (loại)
Vậy CTPT X, Y, Z là $C_2H_6O$, $CH_2O_2$
CTCT có thể:
$CH_3-CH_2OH$
$CH_3-O-CH_3$
$HCOOH$