FeO+2HCl->FeCl2+H2O
a.nFeO=\(\dfrac{10,8}{72}=0,15\left(mol\right)\)
nHCl=\(\dfrac{150\cdot18,25}{100\cdot36,5}=0,75\left(mol\right)\)
Xét tỉ lệ:\(\dfrac{nFeO}{nFeOpt}=\dfrac{0,15}{1}< \dfrac{nHCl}{nHClpt}=\dfrac{0,75}{2}\)
=>FeO hết, HCl dư. Sản phẩm tính theo số mol FeO.
nHCl dư=0,75-0,3=0,45(mol)=>mHCl=0,45*36,5=16,425(g)
nFeCl2=0,15(mol)=>mFeCl2=0,15*127=19,05(g)
b.%mHCl=\(\dfrac{16,425\cdot100}{16,425+19,05}=46,3\%\)
%mFeCl2=100-46,3=53,7%
c. H2SO4+FeO->FeSO4+H2O
nH2SO4=0,15(mol)=>mH2SO4=0,15*98=14,7(g)
mdd=\(\dfrac{14,7\cdot100}{20}=73,5\left(g\right)\)