Ta có: \(n_{MgO}=\dfrac{7}{40}=0,175\left(mol\right)\)
\(n_{H_2SO_4}=0,6.1=0,6\left(mol\right)\)
PT: \(MgO+H_2SO_4\rightarrow MgSO_4+H_2O\)
Xét tỉ lệ: \(\dfrac{0,175}{1}< \dfrac{0,6}{1}\), ta được H2SO4 dư.
Theo PT: \(n_{MgSO_4}=n_{H_2SO_4\left(pư\right)}=n_{MgO}=0,175\left(mol\right)\)
\(\Rightarrow n_{H_2SO_4\left(dư\right)}=0,6-0,175=0,425\left(mol\right)\)
\(\Rightarrow\left\{{}\begin{matrix}C_{M_{MgSO_4}}=\dfrac{0,175}{0,6}=\dfrac{7}{24}\left(M\right)\\C_{M_{H_2SO_4}}=\dfrac{0,425}{0,6}=\dfrac{17}{24}\left(M\right)\end{matrix}\right.\)