\(n_{FeO}=\dfrac{14,4}{72}=0,2\left(mol\right)\\ n_{HCl}=500.10^{-3}.0,2=0,1\left(mol\right)\\ n_{H_2SO_4}=500.10^{-3}.0,3=0,15\left(mol\right)\)
\(PTHH:\\ FeO+2HCl\rightarrow FeCl_2+H_2O\left(1\right)\\ FeO+H_2SO_4\rightarrow FeSO_4+H_2O\left(2\right)\)
Đặt: \(n_{FeO\left(1\right)}=a\left(mol\right);n_{FeO\left(2\right)}=b\left(mol\right)\)
Ta có hệ phương trình:\(\left\{{}\begin{matrix}a+b=0,2\\2a+b=0,1+0,15\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=0,05\\b=0,15\end{matrix}\right.\)
\(m=0,05.127+0,15.152=29,15\left(g\right)\)