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Lượng than nguyên chất:
n C O 2 = n O 2 = 79,17(mol) → V C O 2 = V O 2 = 1773,4(l)
Lượng than nguyên chất:
V O 2 = n O 2 .22,4 = 79,17.22,4 = 1773,4(l)
Cnguyên chất = (100%-10%).1000 = 900 (g)
\(n_C=\dfrac{900}{12}=75\left(mol\right)\)
PTHH: C + O2 ---to→ CO2
Mol: 75 75
\(V_{O_2}=75.22,4=1680\left(l\right)\)
\(m_{CO_2}=75.44=3300\left(g\right)\)
mC = 1000.95% = 950 (g)
PT: \(C+O_2\underrightarrow{t^o}CO_2\)
Ta có: \(n_C=\dfrac{950}{12}=\dfrac{475}{6}\left(mol\right)\)
Theo PT: \(n_{O_2}=n_{CO_2}=n_C=\dfrac{475}{6}\left(mol\right)\)
a+b, \(V_{O_2}=V_{CO_2}=\dfrac{475}{6}.22,4\approx1773,33\left(l\right)\)
Bạn tham khảo tại đây nhé
https://sites.google.com/site/hoahocquan10/bai-tap/bai-tap-hoa-8/hoa-8-chuong-iv
Ta có: \(m_C=1,5.1000.90\%=1350\left(g\right)\)
\(n_C=\dfrac{1350}{12}=112,5\left(mol\right)\)
PT: \(C+O_2\underrightarrow{t^o}CO_2\)
Theo PT: \(n_{O_2}=n_C=112,5\left(mol\right)\)
\(\Rightarrow V_{O_2}=112,5.22,4=2520\left(l\right)\)
\(V_{kk}=V_{O_2}.5=12600\left(l\right)\)
B1:
\(n_C=\dfrac{96\%.14.1000}{12}=1120\left(mol\right)\\ n_S=\dfrac{2,56\%.14.1000}{32}=11,2\left(mol\right)\\ C+O_2\rightarrow\left(t^o\right)CO_2\\ S+O_2\rightarrow\left(t^o\right)SO_2\\ n_{SO_2}=n_S=11,2\left(mol\right)\\ n_{CO_2}=n_C=1120\left(mol\right)\\ V_{CO_2\left(đktc\right)}=1120.22,4=25088\left(l\right)\\ n_{SO_2\left(đktc\right)}=11,2.22,4=250,88\left(l\right)\)
B2:
\(n_{C_2H_6}=\dfrac{1,8.\left(100\%-2\%\right).1000}{22,4}=78,75\left(mol\right)\\ C_2H_6+\dfrac{7}{2}O_2\rightarrow\left(t^o\right)2CO_2+3H_2O\\ n_{O_2\left(đktc\right)}=\dfrac{7}{2}.78,75=275,625\left(mol\right)\\ V_{O_2\left(đktc\right)}=275,625.22,4=6174\left(l\right)=6,174\left(m^3\right)\)
1)
mC = 5000*0.9 = 4500 (g)
nC = 4500/12 = 375 (mol)
C + O2 -to-> CO2
375__375
Vkk = 5VO2 = 375*22.4*5 = 42000(l)
2)
nP = 6.2/31 = 0.2 (mol)
nO2 = 8.96/22.4 = 0.4 (mol)
4P + 5O2 -to-> 2P2O5
0.2___0.25_____0.1
mP2O5 = 0.1*142=14.2 (g)
a)
n C = (1000 - 1000.5%)/12 = 475/6 mol
C + O2 --to--> CO2
n O2 = n C = 475/6 mol
=> V O2 = 22,4 . 475/6 = 1773,33(lít)
b) V CO2 = V O2 = 1773,33(lít)