\(n_{Fe}=\dfrac{11.2}{56}=0.2\left(mol\right)\)
\(Fe+H_2SO_4\rightarrow FeSO_4+H_2\)
\(0.2.......0.2..............0.2.........0.2\)
\(V_{H_2}=0.2\cdot22.4=4.48\left(l\right)\)
\(C\%_{H_2SO_4}=\dfrac{0.2\cdot98}{150}\cdot100\%=13.07\%\)
\(m_{\text{dung dịch sau phản ứng}}=11.2+150-0.2\cdot2=160.8\left(g\right)\)
\(C\%_{FeSO_4}=\dfrac{0.2\cdot152}{160.8}\cdot100\%=18.91\%\)
a) $Fe + H_2SO_4 \to FeSO_4 + H_2$
b) n H2 = n Fe = 11,2/56 = 0,2(mol)
V H2 = 0,2.22,4 = 4,48(lít)
c) n H2SO4 = n H2 = 0,2(mol)
=> C% H2SO4 = 0,2.98/150 .100% = 13,07%
d) n FeCl2 = n Fe = 0,2(mol)
mdd = 11,2 + 150 - 0,2.2 = 160,8(gam)
C% FeCl2 = 0,2.127/160,8 .100% = 15,8%