\(n_{CO_2}=\dfrac{26.4}{44}=0.6\left(mol\right)\)
\(n_{H_2O}=\dfrac{10.8}{18}=0.6\left(mol\right)\)
\(n_O=\dfrac{18-0.6\cdot12-0.6\cdot2}{16}=0.6\left(mol\right)\)
\(n_C:n_H:n_O=0.6:1.2:0.6=1:2:1\)
CT đơn giản nhất : \(CH_2O\)
\(M_X=45\cdot2=90\left(\dfrac{g}{mol}\right)\)
\(\Leftrightarrow30n=90\)
\(\Leftrightarrow n=3\)
\(CT:C_3H_6O_3\)