\(n_{Fe_3O_4}=\dfrac{m}{M}=\dfrac{23,2}{232}=0,1\left(mol\right)\)
PTHH
Fe3O4 + 4H2 ----> 3Fe + 4H2O
..0,1.........0,4........0,3........0,4...(mol)
a) \(V_{H_2}=n\cdot22,4=0,4\cdot22,4=8,96\left(l\right)\)
b) \(m_{Fe}=n\cdot M=0,3\cdot56=16,8\left(g\right)\)
n Fe3O4= m/M= 23.2/232= 0.1 mol
Fe3O4 + 4H2 -> 3Fe + 4H2O
Đặt n Fe3O4 =0.1 mol => nH2= 0.4 mol và nFe= 0.3 mol
a, VH2 cần dùng= n.22,4= 0.4 . 22.4=8.96l
b, mFe thu được= n.M= 0.3 . 56=16.8g
\(n_{Fe_3O_4}=\dfrac{23,2}{232}=0,1\left(mol\right)\)
PTHH: \(Fe_3O_4+4H_2\rightarrow3Fe+4H_2O\)
a. Theo PT ta có: \(n_{H_2}=4.n_{Fe_3O_4}=4.0,1=0,4\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,4.22,4=8,96\left(l\right)\)
b. Theo PT ta có: \(n_{Fe}=3.n_{Fe_3O_4}=3.0,1=0,3\left(mol\right)\)
\(\Rightarrow m_{Fe}=0,3.56=16,8\left(g\right)\)