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\(n_{CO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
PTHH CO2 + Ba(OH)2 --> BaCO3 + H2O
CO2 phản ứng với Ba(OH)2 tạo muối trung hòa
nBa(OH)2 = nCO2=0,1 mol
=> \(CM_{Ba\left(OH\right)_2}=\dfrac{0,1}{0,2}=0,5M\)
nBaCO3 = nCO2=0,1mol
=> \(m_{BaCO_3}=0,2.197=19,7\left(g\right)\)
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
\(n_{BaCO_3}=a\left(mol\right),n_{Ba\left(HCO_3\right)_2}=b\left(mol\right)\)
\(Ba\left(OH\right)_2+CO_2\rightarrow BaCO_3+H_2O\)
\(Ba\left(OH\right)_2+2CO_2\rightarrow Ba\left(HCO_3\right)_2\)
\(n_{Ba\left(OH\right)_2}=a+b=0.15\left(mol\right)\)
\(n_{CO_2}=a+2b=0.2\left(mol\right)\)
\(\Leftrightarrow a=0.1,b=0.05\)
\(m_{BaCO_3}=a=0.1\cdot197=19.7\left(g\right)\)
Bài 1 :
\(n_{CO2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
Pt : \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O|\)
1 1 1 1
0,2 0,2 0,2
a) \(n_{CaCO3}=\dfrac{0,2.1}{1}=0,2\left(mol\right)\)
⇒ \(m_{CaCO3}=0,2.100=20\left(g\right)\)
b) \(n_{Ca\left(OH\right)2}=\dfrac{0,2.1}{1}=0,2\left(mol\right)\)
200ml = 0,2l
\(C_{M_{ddCa\left(OH\right)2}}=\dfrac{0,2}{0,2}=1\left(M\right)\)
Chúc bạn học tốt
\(a.n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ a.Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\\ 0,25.......0,25............0,25..........0,25\left(mol\right)\\ C_{MddCa\left(OH\right)_2}=\dfrac{0,25}{0,1}=2,5\left(M\right)\\ b.m_{\downarrow}=m_{CaCO_3}=100.0,25=25\left(g\right)\)
\(a.n_{CO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\\ CO_2+Ba\left(OH\right)_2\rightarrow BaCO_3+H_2O\\ 0,1...........0,1.............0,1..........0,1\left(mol\right)\\ b.m_{kt}=m_{BaCO_3}=0,1.197=19,7\left(g\right)\\ c.C_{MddBa\left(OH\right)_2}=\dfrac{0,1}{0,2}=0,5\left(M\right)\)
PTHH: \(CO_2+Ba\left(OH\right)_2\rightarrow BaCO_3+H_2O\)
Ta có: \(n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)=n_{Ba\left(OH\right)_2}=n_{BaCO_3}\) \(\Rightarrow\left\{{}\begin{matrix}C_{M_{Ba\left(OH\right)_2}}=\dfrac{0,2}{0,2}=1\left(M\right)\\m_{BaCO_3}=0,2\cdot197=39,4\left(g\right)\end{matrix}\right.\)
\(n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
PT: \(CO_2+Ba\left(OH\right)_2\rightarrow BaCO_3+H_2O\)
Theo PT: \(n_{Ba\left(OH\right)_2}=n_{BaCO_3}=n_{CO_2}=0,2\left(mol\right)\)
\(\Rightarrow x=C_{M_{Ba\left(OH\right)_2}}=\dfrac{0,2}{0,5}=0,4\left(M\right)\)
\(m_{BaCO_3}=0,2.197=39,4\left(g\right)\)
\(n_{CO2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
\(CO_2+Ba\left(OH\right)_2\rightarrow BaCO_3+H_2O\)
0,2------>0,2----------->0,2
\(C_{MddBa\left(OH\right)2}=\dfrac{0,2}{0,5}=0,4\left(M\right)\)
\(m_{kt}=m_{BaCO3}=0,2.197=39,4\left(g\right)\)