1. \(PTHH:3Fe+2O_2\rightarrow Fe_3O_4\)
2. Ta có:
\(n_{Fe}=\frac{50,4}{56}=0,9\left(mol\right)\)
\(\Rightarrow n_{O2}=\frac{2}{3}n_{Fe}=0,6\left(mol\right)\)
\(\Rightarrow V_{O2}=0,6.22,4=13,44\left(l\right)\)
3.\(\Rightarrow n_{Fe3O4}=\frac{1}{3}n_{Fe}=0,3\left(mol\right)\)
\(\Rightarrow m_{Fe3O4}=0,3.232=69,6\left(g\right)\)
3Fe+2O2-to->Fe3O4
0,9--0,6---------0,3
nFe=50,4\56=0,9 mol
=>VO2=0,6.22,4=13,44l
=>mFe3O4=0,3.232=69.6g