\(n_{CO_2}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\\ n_{Ba\left(OH\right)_2}=\dfrac{200.25,65\%}{171}=0,3\left(mol\right)\\ Vì:0,5< \dfrac{n_{Ba\left(OH\right)_2}}{n_{CO_2}}=\dfrac{0,3}{0,4}=0,75< 1\\ \Rightarrow Sp:\left\{{}\begin{matrix}BaCO_3:a\left(mol\right)\\Ba\left(HCO_3\right)_2:b\left(mol\right)\end{matrix}\right.\\\Rightarrow \left\{{}\begin{matrix}a+b=0,3\\a+2b=0,4\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=0,2\\b=0,1\end{matrix}\right.\\ \Rightarrow m_{\downarrow}=m_{BaCO_3}=197.0,2=39,4\left(g\right)\)
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