nFe3O4 = \(\dfrac{3,48}{232}=0,015\left(mol\right)\)
Pt: Fe3O4 + 4H2 --to--> 3Fe + 4H2O
.....0,015--> 0,06-------> 0,045...............(mol)
VH2 pứ = 0,06 . 22,4 = 1,344 (lít)
mFe sau pứ = 0,045 . 56 = 2,52 (g)
a ) PTHH :
\(Fe_3O_4+4H_2\underrightarrow{t^O}3Fe+4H_2O\)
b )
Ta có : \(n_{Fe_3O_4}=\dfrac{3,48}{232}=0,015\left(mol\right)\)
Theo tỉ lệ phương trình :
\(n_{H_2}=4.0,015=0,06\left(mol\right)\)
\(\Rightarrow V_{H_2}=0,06.22,4=1,344\left(l\right)\)
\(n_{Fe}=3.0,015=0,045\left(mol\right)\)
\(\Rightarrow m_{Fe}=0,045.56=2,52\left(g\right)\)