Ta có:
\(n_{CaO}=\frac{3,92}{56}=0,07\left(mol\right)\)
\(PTHH:CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
\(\Rightarrow n_{Ca\left(OH\right)2}=n_{CaO}=0,07\left(mol\right)\)
\(\Rightarrow CM_{Ca\left(OH\right)2}=\frac{0,07}{0,8}=0,0875M\)
\(\left\{{}\begin{matrix}n_{Ca\left(OH\right)2}=0,0875.0,5==0,04375\left(mol\right)\\n_{CO2}=\frac{1,12}{22,4}=0,05\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow T=\frac{n_{Ca\left(OH\right)2}}{n_{CO2}}=0,875\)
\(0,5< T< 0,75\Rightarrow\) Chỉ tạo 2 muối
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
0,04375____0,05______0,04375______
\(CaCO_3+H_2O+CO_2\rightarrow Ca\left(HCO_3\right)_2\)
0,00625___________0,00625____0,00625
\(\Rightarrow\left\{{}\begin{matrix}m_{CaCO3}=3,75\left(g\right)\\m_{Ca\left(HCO3\right)2}=1,0125\left(g\right)\end{matrix}\right.\)
