\(m_{Fe}=\dfrac{11,2}{56}=0,2mol\)
\(3Fe+2O_2\rightarrow\left(t^o\right)Fe_3O_4\)
0,2 2/15 1/15 ( mol )
Sắt từ oxit
\(V_{kk}=\dfrac{2}{15}.22,4.5=14,93l\)
\(m_{Fe_3O_4}=\dfrac{1}{15}.232=15,46g\)
nFe = 11,2 . 56 = 0,2 (mol)
pthh 3Fe + 2O2 -t--> Fe3O4
0,2-->0,13---->0,67 (mol)
sat tu oxit
=> VKK = (0,13 .22,4 ) : 1/5 = 14,56 (l)
=> mFe3O4 = 0,67 . 232=155,44 (g)