a. \(n_{Fe}=\dfrac{5.6}{56}=0,1\left(mol\right)\)
PTHH : 3Fe + 2O2 ----to----> Fe3O4
0,1 \(\dfrac{0.2}{3}\) \(\dfrac{0.1}{3}\)
b. \(m_{Fe_3O_4}=\dfrac{0.1}{3}.232=\dfrac{23.2}{3}\left(g\right)\)
c. \(V_{O_2}=\dfrac{0.2}{3}.22,4=\dfrac{4.48}{3}\left(l\right)\)
\(3Fe+2O_2\underrightarrow{t^o}Fe_3O_4\)
\(nFe=\dfrac{5,6}{56}=0,1\left(mol\right)\)
\(\Rightarrow nFe_3O_4=\dfrac{1}{3}.nFe=\dfrac{1}{3}.0,1=0,03\left(mol\right)\)
\(mFe_3O_4=0,03.232=6,96\left(g\right)\)
\(nO_2=\dfrac{2}{3}.nFe=\dfrac{2}{3}.0,1=0,07\left(mol\right)\)
\(VO_2=0,07.22,4=1,568\left(lít\right)\)