\(Fe + 2HCl \to FeCl_2 + H_2\\ n_{Fe} = n_{FeCl_2} = n_{H_2} = \dfrac{8,96}{22,4} = 0,4(mol)\\ m_{Fe} = 0,4.56 = 22,4(gam)\\ m_{FeCl_2} = 0,4.127 = 50,8(gam)\)
\(n_{H_2}=\dfrac{8.96}{22.4}=0.4\left(mol\right)\)
\(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(n_{Fe}=n_{FeCl_2}=n_{H_2}=0.4\left(mol\right)\)
\(m_{Fe}=0.4\cdot56=22.4\left(g\right)\)
\(m_{FeCl_2}=0.4\cdot127=50.8\left(g\right)\)
a) PTHH : Fe + 2HCl → FeCl2 + H2
b) VH2(đktc)=8,96(l) → nH2= \(\dfrac{8,96}{22,4}\)=0,4(mol)
→ nFe= 0,4(mol)
mFe= 0,4 . 56=22,4(g)
c) Ta có : nH2= \(\dfrac{8,96}{22,4}\)=0,4(mol) → nFeCl2= 0,4(mol)
mFeCl2= 0,4 . 127=50,8(g)