a) \(Fe_xO_y+yCO\xrightarrow[]{t^o}xFe+yCO_2\)
b) \(n_O=n_{CO_2}=\dfrac{3,136}{22,4}=0,14\left(mol\right)\)
\(BTNT:m_{Fe}=8,12-0,14.16=5,88\left(g\right)\\ d,n_{Fe}=\dfrac{5,88}{56}=0,105\left(mol\right)\\ \Rightarrow\dfrac{x}{y}=\dfrac{n_{Fe}}{n_O}=\dfrac{0,105}{0,14}=\dfrac{3}{4}\)
=> CTHH: `Fe_3O_4` sắt từ oxit
a) FexOy+yCOto→xFe+yCO2FexOy+yCO→toxFe+yCO2
b) BTNT:mFe=8,12−0,14.16=5,88(g)d,nFe=5,8856=0,105(mol)⇒xy=nFenO=0,1050,14=34BTNT:mFe=8,12−0,14.16=5,88(g)d,nFe=5,8856=0,105(mol)⇒xy=nFenO=0,1050,14=34
=> CTHH: Fe3O4Fe3O4 sắt từ oxit