\(n_{CO}=\frac{10,08}{22,4}=0,45\left(mol\right)\)
Ta có
nO trong oxit=nCO=0,45 mol
\(m_{KL}=24-0,45.16=16,8\left(g\right)\)
\(2M+2nHCl\rightarrow2MCln+nH_2\)
\(n_{H2}=\frac{6,72}{22,4}=0,3\left(mol\right)\)
\(\rightarrow n_M=\frac{0,6}{n}mol\)
\(M_M=\frac{16,8:0,6}{n}=28n\rightarrow n=2,M_M=56\)
Vậy M là Fe
\(n_{Fe}=\frac{16,8}{56}=0,3\left(mol\right)\)
Ta có
\(n_{Fe}:n_O=0,3:0,45=2:3\)
Vậy CTHH là Fe2O3