Ta có: \(n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
\(n_{Ba\left(OH\right)_2}=0,15.1=0,15\left(mol\right)\)
\(\Rightarrow\dfrac{n_{CO_2}}{n_{Ba\left(OH\right)_2}}=1,333\)
Vậy pư tạo 2 muối BaCO3 và Ba(HCO3)2.
PT: \(CO_2+Ba\left(OH\right)_2\rightarrow BaCO_3+H_2O\)
\(2CO_2+Ba\left(OH\right)_2\rightarrow Ba\left(HCO_3\right)_2\)
Giả sử: \(\left\{{}\begin{matrix}n_{BaCO_3}=x\left(mol\right)\\n_{Ba\left(HCO_3\right)_2}=y\left(mol\right)\end{matrix}\right.\)
Theo PT: \(\left\{{}\begin{matrix}n_{CO_2}=n_{BaCO_3}+2n_{Ba\left(HCO_3\right)_2}=x+2y\left(mol\right)\\n_{Ba\left(OH\right)_2}=n_{BaCO_3}+n_{Ba\left(HCO_3\right)_2}=x+y\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}x+2y=0,2\\x+y=0,15\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}x=0,1\left(mol\right)\\y=0,05\left(mol\right)\end{matrix}\right.\)
⇒ a = mBaCO3 = 0,1.197 = 19,7 (g)
Bạn tham khảo nhé!
\(n_{CO_2}=\dfrac{4.48}{22.4}=0.2\left(mol\right)\)
\(n_{Ba\left(OH\right)_2}=0.15\cdot1=0.15\left(mol\right)\)
\(T=\dfrac{0.2}{0.15}=1.33\)
=> Tạo ra 2 muối
\(n_{BaCO_3}=a\left(mol\right),n_{Ba\left(HCO_3\right)_2}=b\left(mol\right)\)
\(Ba\left(OH\right)_2+CO_2\rightarrow BaCO_3+H_2O\)
\(Ba\left(OH\right)_2+2CO_2\rightarrow Ba\left(HCO_3\right)_2\)
\(n_{Ba\left(OH\right)_2}=a+b=0.15\left(mol\right)\)
\(n_{CO_2}=a+2b=0.2\left(mol\right)\)
\(\Leftrightarrow a=0.1,b=0.05\)
\(m_{BaCO_3}=a=0.1\cdot197=19.7\left(g\right)\)
