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![](https://rs.olm.vn/images/avt/0.png?1311)
a, \(n_{C_2H_4}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
PT: \(C_2H_4+3O_2\underrightarrow{t^o}2CO_2+2H_2O\)
\(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_{3\downarrow}+H_2O\)
Theo PT: \(n_{CaCO_3}=n_{CO_2}=2n_{C_2H_4}=0,1\left(mol\right)\)
\(\Rightarrow m_{CaCO_3}=0,1.100=10\left(g\right)\)
b, Theo PT: \(n_{O_2}=3n_{C_2H_4}=0,15\left(mol\right)\Rightarrow V_{O_2}=0,15.22,4=3,36\left(l\right)\)
\(\Rightarrow V_{kk}=\dfrac{V_{O_2}}{20\%}=16,8\left(l\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{C_2H_4}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\\ PTHH:C_2H_4+3O_2\rightarrow\left(t^o\right)2CO_2+2H_2O\\ n_{O_2}=3.0,4=1,2\left(mol\right);n_{CO_2}=0,4.2=0,8\left(mol\right)\\ a,V_{O_2\left(đktc\right)}=22,4.1,2=26,88\left(l\right)\\ b,V_{kk\left(đktc\right)}=\dfrac{100}{20}.26,88=134,4\left(l\right)\\ c,CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3\downarrow\left(trắng\right)+H_2O\\ n_{CaCO_3}=n_{CO_2}=0,8\left(mol\right)\\ m_{kết.tủa}=m_{CaCO_3}=100.0,8=80\left(g\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{C_2H_4}=\dfrac{2,24}{22,4}=0,1mol\)
\(C_2H_4+3O_2\rightarrow\left(t^o\right)2CO_2+2H_2O\)
0,1 0,3 0,2 ( mol )
\(V_{O_2}=0,3.22,4=6,72l\)
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
0,2 0,2 ( mol )
\(V_{Ca\left(OH\right)_2}=\dfrac{0,2}{0,4}=0,5l\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a, PT: \(C_2H_4+3O_2\underrightarrow{t^o}2CO_2+2H_2O\)
Ta có: \(n_{C_2H_4}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
Theo PT: \(n_{O_2}=3n_{C_2H_4}=0,45\left(mol\right)\)
\(\Rightarrow V_{O_2}=0,45.22,4=10,08\left(l\right)\)
b, Theo PT: \(n_{CO_2}=2n_{C_2H_4}=0,3\left(mol\right)\)
\(\Rightarrow V_{CO_2}=0,3.22,4=6,72\left(l\right)\)
c, PT: \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_{3\downarrow}+H_2O\)
Theo PT: \(n_{CaCO_3}=n_{CO_2}=0,3\left(mol\right)\)
\(\Rightarrow m_{\downarrow}=m_{CaCO_3}=0,3.100=30\left(g\right)\)
Bạn tham khảo nhé!
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{C_2H_4}=\dfrac{4.48}{22.4}=0.2\left(mol\right)\)
\(C_2H_4+3O_2\underrightarrow{^{t^0}}2CO_2+2H_2O\)
\(0.2.........0.6........0.4..........0.4\)
\(V_{O_2}=0.6\cdot22.4=13.44\left(l\right)\)
\(m_{H_2O}=0.4\cdot18=7.2\left(g\right)\)
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
\(..............0.4.....0.4\)
\(m_{CaCO_3}=0.4\cdot100=40\left(g\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{O_2}=\dfrac{8}{32}=0.25\left(mol\right)\)
\(CH_4+2O_2\underrightarrow{t^0}CO_2+2H_2O\)
\(0.125....0.25....0.125\)
\(m_{CH_4}=0.125\cdot16=2\left(g\right)\)
\(V_{CO_2}=0.125\cdot22.4=2.8\left(l\right)\)
\(Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\)
\(............0.125.....0.125\)
\(m_{CaCO_3}=0.125\cdot100=12.5\left(g\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a,PT: \(CH_4+2O_2\underrightarrow{t^o}CO_2+2H_2O\)
Ta có: \(n_{CH_4}=\dfrac{3,2}{16}=0,2\left(mol\right)\)
Theo PT: \(n_{O_2}=2n_{CH_4}=0,4\left(mol\right)\)
\(\Rightarrow V_{O_2}0,4.22,4=8,96\left(l\right)\)
b, Theo PT: \(n_{CO_2}=n_{CH_4}=0,2\left(mol\right)\)
PT: \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_{3\downarrow}+H_2O\)
Theo PT: \(n_{CaCO_3}=n_{CO_2}=0,2\left(mol\right)\)
\(\Rightarrow m_{\downarrow}=m_{CaCO_3}=0,2.100=20\left(g\right)\)
Bạn tham khảo nhé!
![](https://rs.olm.vn/images/avt/0.png?1311)
a, nC2H4 = 2,24/22,4 = 0,1 (mol)
PTHH: C2H4 + 3O2 -to-> 2CO2 + 2H2O
Mol: 0,1 ---> 0,3 ---> 0,2
b, VO2 = 0,3 . 22,4 = 6,72 (l)
c, mCO2 = 0,2 . 44 = 8,8 (g)
d, Vkk = 6,72 . 5 = 33,6 (l)
PTHH: Ca(OH)2 + CO2 -> CaCO3 + H2O
Mol: 0,2 <--- 0,2 ---> 0,2
mCaCO3 = 0,2 . 100 = 20 (g)