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\(Fe+2HCl\rightarrow FeCl_2+H_2\)
0,2__________0,2_______0,2
\(n_{Fe}=\frac{11,2}{56}=0,2\left(mol\right)\)
\(V_{H2}=0,2.22,4=4,48\left(l\right)\)
\(m_{FeCl2}=0,2.\left(56+71\right)=25,4\left(g\right)\)
\(CuO+H_2\rightarrow Cu+H_2O\)
______0,2____0,2______
\(m_{Cu}=0,2.64=12,8\left(g\right)\)
a)\(4FeS_2+11O_2\underrightarrow{t^o}2Fe_2O_3+8SO_2\)
\(2SO_2+O_2\underrightarrow{t^o}2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
b)\(m_{H_2SO_4}=\dfrac{50\cdot49\%}{100\%}=24,5g\Rightarrow n_{H_2SO_4}=0,25mol\)
Từ quá trình trên: \(4FeS_2\rightarrow H_2SO_4\)
\(\Rightarrow n_{FeS_2}=\dfrac{1}{4}n_{H_2SO_4}=\dfrac{1}{4}\cdot0,25=\dfrac{1}{16}mol\)\
\(m_{FeS_2}=\dfrac{1}{16}\cdot120=7,5g\)
c)\(n_{NaOH}=0,3\cdot1=0,3mol\)
\(SO_2+2NaOH\rightarrow Na_2SO_3+H_2O\)
0,15 0,3 0,15
\(m_{Na_2SO_3}=0,15\cdot126=18,9g\)
CuS + 3/2 O 2 → t ° CuO + S O 2 (1)
S O 2 + Br 2 + 2 H 2 O → 2HBr + H 2 SO 4 (2)
H 2 SO 4 + Ag 2 O → Ag 2 SO 4 + H 2 O (3)
CuO + H 2 → t ° Cu + H 2 O (4)
Cu + Cl 2 → t ° Cu Cl 2 (5)
Cu + 2 H 2 SO 4 → Cu SO 4 + S O 2 + 2 H 2 O (6)
Ag 2 SO 4 + Cu Cl 2 → 2AgCl + Cu SO 4 (7)
Cu SO 4 + H 2 S → CuS + H 2 SO 4 (8)
Fe + 3/2Cl2 -to-> FeCl3
Fe + 2HCl --> FeCl2 + H2
3Fe + 2O2 -to-> Fe3O4
Fe + H2SO4 --> FeSO4 + H2
2Fe + 6H2SO4(đ) -to-> Fe2(SO4)3 + 3SO2 + 6H2O
Al + 3/2Cl2 -to-> AlCl3
2Al + 6HCl --> 2AlCl3 + 3H2
2Al + 3O2 -to-> 2Al2O3
2Al + 3H2SO4 --> Al2(SO4)3 + 3H2
2Al + 6H2SO4 (đ) -to-> Al2(SO4)3 + 3SO2 + 6H2O
Zn + Cl2 -to-> ZnCl2
Zn + 2HCl --> ZnCl2 + H2
Zn + 1/2O2 -to-> ZnO
Zn + H2SO4 --> ZnSO4 + H2
Zn + 2H2SO4(đ) -to-> ZnSO4 + SO2 + 2H2O
PTHH: 2Fe +3 Cl2 \(\underrightarrow{t^o}\) 2FeCl3
Fe + 2HCl \(\rightarrow\) FeCl2 + H2\(\uparrow\)
Fe + H2SO4 loãng \(\rightarrow\) FeSO4 + H2\(\uparrow\)
2Fe + 6H2SO4 đặc \(\underrightarrow{t^o}\) Fe2(SO4)3 + 6H2O + 3SO2\(\uparrow\)
2Al + 6HCl \(\rightarrow\) 2AlCl3 + 3H2\(\uparrow\)
4Al + 3O2 \(\underrightarrow{t^o}\) 2Al2O3
2Al + 6H2SO4 đặc \(\underrightarrow{t^o}\) Al2(SO4)3 + 6H2O + 3SO2\(\uparrow\)
2Al + 3H2SO4 loãng \(\rightarrow\) Al2(SO4)3 + 3H2\(\uparrow\)
Zn + 2HCl \(\rightarrow\) ZnCl2 + H2\(\uparrow\)
Zn + H2SO4 loãng \(\rightarrow\) ZnSO4 + H2\(\uparrow\)
Zn + 2H2SO4 đặc \(\rightarrow\) ZnSO4 + 2H2O + SO2\(\uparrow\)
a-4; b-3; c-2; d-1; e-5