PTHH: \(2CO+O_2\underrightarrow{t^o}2CO_2\) (1)
\(2H_2+O_2\underrightarrow{t^o}2H_2O\) (2)
Ta có: \(\left\{{}\begin{matrix}n_{CO_2}=n_{CO}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\Rightarrow n_{O_2\left(1\right)}=0,1\left(mol\right)\\\Sigma n_{O_2}=\dfrac{6,72}{22,4}=0,3\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow n_{O_2\left(2\right)}=0,2\left(mol\right)\) \(\Rightarrow n_{H_2}=0,4\left(mol\right)\)
\(\Rightarrow\%V_{H_2}=\dfrac{0,4}{0,4+0,2}\cdot100\%\approx66,67\%\)
\(\Rightarrow\%V_{CO}=33,33\%\)