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![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{KMnO_4}=\dfrac{15,8}{158}=0,1\left(mol\right)\\ 2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\\ n_{Cl_2}=\dfrac{5}{2}.0,1=0,25\left(mol\right)\\ V_{Cl_2\left(đkc\right)}=0,25.24,79=6,1975\left(l\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{O_2}=\dfrac{22,12-21,16}{32}=0,03\left(mol\right)\)
\(n_{KMnO_4}=\dfrac{22,12}{158}=0,14\left(mol\right)\)
Mn+7 + 5e --> Mn+2
0,14-->0,7
2O-2 - 4e --> O20
0,12<--0,03
2Cl- - 2e --> Cl20
2a<---a
Bảo toàn e: 2a + 0,12 = 0,7
=> a = 0,29 (mol)
=> VCl2 = 0,29.22,4 = 6,496 (l)
![](https://rs.olm.vn/images/avt/0.png?1311)
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\(n_{KMnO_4}=\dfrac{15,8}{258}=0,1\left(mol\right)\)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
0,1 0,25 (mol)
\(V_{Cl_2}=0,25.22,4=5,6\left(l\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
PTHH: \(2KMnO_4+16HCl_{\left(đ\right)}\rightarrow2KCl+2MnCl_2+5Cl_2\uparrow+8H_2O\)
Ta có: \(n_{KMnO_4}=\dfrac{14,2}{158}=\dfrac{71}{790}\left(mol\right)\)
\(\Rightarrow n_{Cl_2}=\dfrac{71}{316}\left(mol\right)\) \(\Rightarrow V_{Cl_2}=\dfrac{71}{316}\cdot22,4\approx5,03\left(l\right)\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(n_{MnO_2}=\dfrac{17,4}{87}=0,2\left(mol\right)\)
PTHH: MnO2 + 4HCl --> MnCl2 + Cl2 + 2H2O
______0,2------------------------->0,2
=> VCl2 = 0,2.22,4 = 4,48(l)