- TN1: Gọi (nCO;nH2;nN2) = (a;b;c)
=> 28a + 2b + 28c = 4,4 (1)
PTHH: FeO + CO --to--> Fe + CO2'
a-------->a
FeO + H2 --to--> Fe + H2O
b------>b
=> a + b = \(\dfrac{11,2}{56}=0,2\) (2)
- TN2: Gọi (nCO;nH2;nN2) = (ak;bk;ck)
=> ak + bk + ck = \(\dfrac{11,2}{22,4}=0,5\) (3)
\(V_{O_2\left(pư\right)}=\dfrac{9,856.100}{110}=8,96\left(l\right)\Rightarrow n_{O_2\left(pư\right)}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\)
PTHH: 2CO + O2 --to--> 2CO2
ak-->0,5ak
2H2 + O2 --to--> 2H2O
bk-->0,5bk
N2 + O2 --to--> 2NO
ck-->ck------>2ck
2NO + O2 --> 2NO2
2ck-->ck
=> 0,5ak + 0,5bk + 2ck = 0,4 (4)
(1)(2)(3)(4) => \(\left\{{}\begin{matrix}a=0,1\left(mol\right)\\b=0,1\left(mol\right)\\c=0,05\left(mol\right)\\k=2\end{matrix}\right.\)
\(\left\{{}\begin{matrix}\%m_{CO}=\dfrac{0,1.28}{4,4}.100\%=63,64\%\\\%m_{H_2}=\dfrac{0,1.2}{4,4}.100\%=4,54\%\\\%m_{N_2}=\dfrac{0,05.28}{4,4}.100\%=31,82\%\end{matrix}\right.\)