\(SO_2+Ba\left(OH\right)_2\rightarrow H_2O+BaSO_3\downarrow\)
Sản phẩm: Nước và BaSO3 kết tủa
\(n_{SO_2}=0,1\left(mol\right);n_{Ba\left(OH\right)_2}=0,15\left(mol\right)\)
\(TH_1:Ba\left(OH\right)_2+SO_2\rightarrow BaSO_3+H_2O\)
\(TL:\frac{0,1}{1}< \frac{0,15}{1}\rightarrow Ba\left(OH\right)_2.du\)
\(m_M=0,1.217=21,7\left(g\right)\)
\(TH_2:\left(1\right)Ba\left(OH\right)_2+SO_2\rightarrow BaSO_3+H_2O\\ \left(2\right)Ba\left(OH\right)_2+2SO_2\rightarrow Ba\left(HSO_3\right)_2\)\(n_{SO_2\left(1\right)}=x;n_{SO_2\left(2\right)}=y\\ hpt:\left\{{}\begin{matrix}22,4\left(x+y\right)=2,24\\171\left(x+\frac{y}{2}\right)=25,65\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=0,2\\x=-0,1\end{matrix}\right.\left(KTM\right)\)