\(n_{O_2}=\dfrac{6,72}{22,4}=0,3mol\)
Gọi \(\left\{{}\begin{matrix}n_{CH_4}=x\\n_{C_2H_4}=y\end{matrix}\right.\)
\(CH_4+2O_2\rightarrow\left(t^o\right)CO_2+2H_2O\)
x 2x ( mol )
\(C_2H_4+3O_2\rightarrow\left(t^o\right)2CO_2+2H_2O\)
y 3y ( mol )
Ta có:
\(\left\{{}\begin{matrix}16x+28y=2,6\\2x+3y=0,3\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=0,075\\y=0,05\end{matrix}\right.\)
\(\Rightarrow m_{CH_4}=0,075.16=1,2g\)
\(\Rightarrow m_{C_2H_4}=0,05.28=1,4g\)
\(\%m_{CH_4}=\dfrac{1,2}{2,6}.100=46,15\%\)
\(\%m_{C_2H_4}=100\%-46,15\%=53,85\%\)
\(n_{CH_4}=22,4.0,075=1,68l\)
\(n_{C_2H_4}=0,05.22,4=1,12l\)
