Đặt nCuO = x ( mol ); nFeO = y ( mol ); ( x,y > 0 )
CuO + H2SO4 \(\rightarrow\) CuSO4 + H2O (1)
FeO + H2SO4 \(\rightarrow\) FeSO4 + H2O (2)
Từ (1)(2) ta có hệ pt
\(\left\{{}\begin{matrix}80x+72y=22,8\\160x+152y=46,8\end{matrix}\right.\)
\(\Rightarrow\) \(\left\{{}\begin{matrix}x=0,15\\y=0,15\end{matrix}\right.\)
\(\Rightarrow\) nH2SO4 = 0,15 + 0,15 = 0,3 ( mol )