Gọi \(\left\{{}\begin{matrix}n_{C_nH_{2n+2}}=a\left(mol\right)\\n_{C_mH_{2m}}=b\left(mol\right)\end{matrix}\right.\)
=> \(a+b=\dfrac{11,2}{22,4}=0,5\left(mol\right)\)
\(n_{CO_2}=\dfrac{33,6}{22,4}=1,5\left(mol\right)\)
\(n_{H_2O}=\dfrac{30,6}{18}=1,7\left(mol\right)\)
Bảo toàn C: an + bm = 1,5
=> 2an + 2bm = 3 (1)
Bảo toàn H: 2an + 2a + 2bm = 3,4 (2)
(2) - (1) => 2a = 0,4
=> a = 0,2 (mol)
\(\%V_{C_nH_{2n+2}}=\dfrac{0,2}{0,5}.100\%=40\%\)
\(\%V_{C_mH_{2m}}=100\%-40\%=60\%\)