nhỗn hợp = \(\dfrac{11,2}{22,4}=0,5\left(mol\right)\)
\(n_{H_2O}=\dfrac{16,2}{18}=0,9\left(mol\right)\)
Gọi \(n_{CH_4}\) = a (mol); \(n_{H_2}\) = b (mol)
PT: CH4 + 2O2 \(\underrightarrow{t^o}\) CO2 + 2H2O
mol a → 2a a 2a
2H2 + O2 \(\underrightarrow{t^o}\) 2H2O
mol b → 0,5b b
\(\left\{{}\begin{matrix}a+b=0,5\\2a+b=0,9\end{matrix}\right.\)
⇒ \(\left\{{}\begin{matrix}a=0,4\\b=0,1\end{matrix}\right.\)
a) Vì tỉ lệ V = tỉ lệ n nên:
% V CH4 = \(\dfrac{0,4}{0,5}.100\%=80\%\)
% V H2 = 100% - 80% = 20%
b) \(V_{CO_2\left(đktc\right)}=0,4.22,4=8,96\left(l\right)\)