Đặt: CxOy (x,y:nguyên, dương)
Áp dụng QT hóa trị:
\(IV.x=y.II\\ \Rightarrow\dfrac{x}{y}=\dfrac{II}{IV}=\dfrac{2}{4}=\dfrac{1}{2}\\ \Rightarrow x=1;y=2\\ \Rightarrow CTHH:CO_2\\ PTK_{CO_2}=NTK_C+NTK_O.2=12+16.2=44\left(d.v.C\right)\)
\(CTTQ:C_x^{IV}O_y^{II}\\ \Rightarrow x.IV=y.II\Rightarrow \dfrac{x}{y}=\dfrac{1}{2}\Rightarrow=1;y=2\\ \Rightarrow CTHH:CO_2\\ PTK_{CO_2}=12+16.2=44(đvC)\)