\(n_{H2}=\frac{2,24}{22,4}=0,1\left(mol\right)\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
0,1____0,2____________0,1
\(FeO+2HCl\rightarrow FeCl_2+H_2O\)
0,22___0,44_______________
\(\%m_{Fe}=\frac{0,1.56}{21,6}.100\%=25,92\%\)
\(\%m_{FeO}=100\%-25,92\%=74,08\%\)
\(m_{FeO}=21,6-0,1.56=16\left(g\right)\)
\(n_{FeO}=\frac{16}{56+16}=0,22\)
\(V_{dd_{HCl}}=\frac{0,64}{0,2}=3,2\left(l\right)\)
a) Fe+2HCl---->FeCl2+H2
FE2O3+6HCl--->2FeCl3+3H2O
nH2=2,24/22,4=0,1(mol)
n Fe=n H2=0,1(mol)
m Fe=0,1.56=5,6(g)
%m Fe=5,6/21,6.100%=25,93%
%m Fe2O3=100%-25,93=74,07%
b) n HCL(1)=2n H2=0,2(mol)
m Fe2O3=21,6-5,6=16(g)
-->n Fe2O3=16/160=0,1(mol)
Theo pthh2
n HCl=6n Fe2O3=0,6(mol)
Tổng n HCl=0,6+0,2=0,8(mol)
V HCl=0,8/0,2=4(l)