FexOy + 2yHCl --> xFeCl2y/x + yH2O (1)
nFexOy=\(\dfrac{58}{56x+16y}\left(mol\right)\)
nFeCl2y/x=\(\dfrac{113}{56+\dfrac{71y}{x}}\left(mol\right)\)
Theo (1) : nFexOy=1/x nFeCl2y/x=\(\dfrac{113}{56x+71y}\left(mol\right)\)
=> \(\dfrac{58}{56x+16y}=\dfrac{113}{56x+71y}\)
=> \(\dfrac{x}{y}=\dfrac{3}{4}\)=> FexOy : Fe3O4
Fe3O4 + 8HCl --> FeCl2 + 2FeCl3 + 4H2O (2)
nFe3O4=0,25(mol)
=> nHCl=8nFe3O4=2(mol)
=> VHCl=2(l)