Có \(\left\{{}\begin{matrix}n_{H_2}+n_{C_2H_2}=\dfrac{17,92}{22,4}=0,8\\\dfrac{2.n_{H_2}+26.n_{C_2H_2}}{n_{H_2}+n_{C_2H_2}}=0,5.28=14\end{matrix}\right.\)
=> \(\left\{{}\begin{matrix}n_{H_2}=0,4\left(mol\right)\\n_{C_2H_2}=0,4\left(mol\right)\end{matrix}\right.\)
\(n_{O_2}=\dfrac{51,2}{32}=1,6\left(mol\right)\)
PTHH: 2H2 + O2 --to--> 2H2O
0,4-->0,2
2C2H2 + 5O2 --to--> 4CO2 + 2H2O
0,4----->1------------>0,8
=> Y chứa \(\left\{{}\begin{matrix}CO_2:0,8\left(mol\right)\\O_{2\left(dư\right)}:0,4\left(mol\right)\end{matrix}\right.\)
=> \(\overline{M}_Y=\dfrac{0,8.44+0,4.32}{0,8+0,4}=40\left(g/mol\right)\)
\(\overline{M}_X=14\left(g/mol\right)\)
=> \(d_{X/Y}=\dfrac{14}{40}=0,35\)