CH3-OH +\(\dfrac{3}{2}\) O2 -----> CO2 +2 H2O
x --> x --> 2x (mol)
CH3-CH2-OH +3 O2 -------> 2CO2 +3 H2O
y --> 2y --> 3y (mol)
a) nCO2=\(\dfrac{4,48}{22,4}\)=0,2 (mol)
=> x +2y =0,2 (1)
Theo đề mhh= mch3oh + mc2h5oh = 5,5
<=> 32x + 46y =5,5 (2)
Từ (1) và (2) \(\left\{{}\begin{matrix}x+2y=0,2\\32x+46y=5,5\end{matrix}\right.\) <=> \(\left\{{}\begin{matrix}x=0,1\\y=0,05\end{matrix}\right.\)
=> mch3oh= 0,1.32=3,2(g)
=> %mch3oh=\(\dfrac{3,2}{5,5}\).100%=58,2%
=> %mc2h5oh= 100% - 58,2%=41,8%
b) nh2o=2x +3y = 2.0,1+3.0,05=0,35 (mol)
--> mh20= 0,35.18=6,3(g)
c) CH3-OH \(\xrightarrow[140]{H2SO4đ}\) (không tác dụng)
2 CH3-CH2-OH \(\xrightarrow[140]{H2SO4đ}\) CH3-CH2-O-CH2-CH3 + H2O