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\(n_{C_2H_4}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\\ C_2H_4+3O_2\rightarrow\left(t^o\right)2CO_2+2H_2O\\ a,n_{O_2}=3.0,5=1,5\left(mol\right)\\ V_{O_2\left(đktc\right)}=1,5.22,4=33,6\left(l\right)\\ V_{kk\left(đktc\right)}=33,6.5=168\left(l\right)\\ b,n_{CO_2}=n_{H_2O}=2.0,5=1\left(mol\right)\\ m_{CO_2}=44.1=44\left(g\right);m_{H_2O}=18.1=18\left(g\right)\\ c,CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\\ n_{Ca\left(OH\right)_2}=n_{CO_2}=1\left(mol\right)\\ m_{Ca\left(OH\right)_2}=1.74=74\left(g\right)\\ m_{ddCa\left(OH\right)_2}=\dfrac{74.100}{10}=740\left(g\right)\)
a. \(n_{CH_4}=\dfrac{4.48}{22,4}=0,2\left(mol\right)\)
PTHH : CH4 + 2O2 ---t0---> CO2 + 2H2O
0,2 0,4 0,2
b. \(V_{O_2}=0,4.22,4=8,96\left(l\right)\)
\(V_{CO_2}=0,2.22,4=4,48\left(l\right)\)
c. \(V_{kk}=8,96.5=44,8\left(l\right)\)
a, \(n_{O_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
PT: \(C_2H_6O+3O_2\underrightarrow{t^o}2CO_2+3H_2O\)
Theo PT: \(n_{CO_2}=\dfrac{2}{3}n_{O_2}=\dfrac{2}{15}\left(mol\right)\Rightarrow V_{CO_2}=\dfrac{2}{15}.22,4=\dfrac{224}{75}\left(l\right)\)
b, \(n_{C_2H_6O\left(LT\right)}=\dfrac{1}{3}n_{O_2}=\dfrac{1}{15}\left(mol\right)\)
Mà: H = 90%
\(\Rightarrow n_{C_2H_6O\left(TT\right)}=\dfrac{\dfrac{1}{15}}{90\%}=\dfrac{2}{27}\left(mol\right)\)
\(\Rightarrow m_{C_2H_6O}=\dfrac{2}{27}.46=\dfrac{92}{27}\left(g\right)\)
\(n_{C_2H_4}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\\ PTHH:C_2H_4+3O_2\rightarrow\left(t^o\right)2CO_2+2H_2O\\ n_{O_2}=3.0,4=1,2\left(mol\right);n_{CO_2}=0,4.2=0,8\left(mol\right)\\ a,V_{O_2\left(đktc\right)}=22,4.1,2=26,88\left(l\right)\\ b,V_{kk\left(đktc\right)}=\dfrac{100}{20}.26,88=134,4\left(l\right)\\ c,CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3\downarrow\left(trắng\right)+H_2O\\ n_{CaCO_3}=n_{CO_2}=0,8\left(mol\right)\\ m_{kết.tủa}=m_{CaCO_3}=100.0,8=80\left(g\right)\)
\(n_{C_2H_4}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
PTHH: C2H4 + 3O2 ---to---> 2CO2 + 2H2O
0,2 0,6 0,4 0,4
VO2 = 0,6.22,4 = 13,44 (l)
mCO2 = 0,4.44 = 17,6 (g)
mH2O = 0,4.18 = 7,2 (g)
PTHH: Ca(OH)2 + CO2 ---> CaCO3 + H2O
Khối lượng dd tăng bằng khối lượng CO2 tham gia phản ứng là 17,6 g