\(n_{CaO}=\dfrac{3.92}{56}=0.07\left(mol\right)\)
\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
\(0.07.....................0.07\)
\(n_{CO_2}=\dfrac{1.12}{22.4}=0.05\left(mol\right)\)
\(T=\dfrac{0.05}{0.07}=0.7\)
\(\Rightarrow\text{Tạo ra muối TH}\)
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
\(0.05...............0.05.........0.05\)
\(m_{CaCO_3}=0.05\cdot100=5\left(g\right)\)
\(C_{M_{Ca\left(OH\right)_2\left(dư\right)}}=\dfrac{0.07-0.05}{0.7}=\dfrac{1}{35}\left(M\right)\)