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bài này là dạng cơ bản , chỉ cần áp dụng công thức V = n*22,4
nCO2= 0.44/44=0.01mol
VCO2= 0.224 l
nH2=1/2=0.5 mol
VH2= 0.5*22.4=11.2l
Thể tích hỗn hợp khí:0.224+11.2=11.424l
a) nFe= \(\frac{m_{Fe}}{M_{Fe}}=\frac{5,6}{56}=0,1\left(mol\right)\)
nCu=\(\frac{m_{Cu}}{M_{Cu}}=\frac{64}{64}=1\left(mol\right)\)
nAl= \(\frac{m_{Al}}{M_{Al}}=\frac{27}{27}=1\left(mol\right)\)
b) \(n_{CO_2}=\frac{m_{CO_2}}{M_{CO_2}}=\frac{44}{44}=1\left(mol\right)\)
\(n_{H_2}=\frac{m_{H_2}}{M_{H_2}}=\frac{4}{2}=2\left(mol\right)\)
a) nFe = 5,6/56 = 0,1 mol
nCu = 64/64 = 1 mol
nAl = 27/27 = 1 mol
b) nCO2 = 44/44 = 1 mol
=> VCO2 = 1.22,4 = 22,4 l
nH2 = 4/2 = 2 mol
=> VH2 = 2.22,4 = 44,8 l
a) nFe= \(\frac{5,6}{56}\)= 0,1 mol
nCu= \(\frac{64}{64}\)= 1mol
nAl= \(\frac{27}{27}\)= 1 mol
b)
nCO2= \(\frac{44}{12+16.2}\)= 1 mol
nH2= \(\frac{4}{1.2}\)= 2 mol
=> nhh= 1+2= 3 mol
Vhh= 3.22,4= 67,2 l
a) Số mol Fe trong 5,6 g Fe:
nFe=\(\frac{m_{Fe}}{M_{Fe}}=\frac{5,6}{56}=0,1\left(mol\right)\)
Số mol Cu có trong 64 g Cu:
nCu=\(\frac{m_{Cu}}{M_{Cu}}=\frac{64}{64}=1\left(mol\right)\)
Số mol Al có trong 27 g Al:
nAl= \(\frac{m_{Al}}{M_{Al}}=\frac{27}{27}=1\left(mol\right)\)
a) \(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\)
\(n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\)
\(n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\)
\(n_{Cu}=\dfrac{19,2}{64}=0,3\left(mol\right)\)
b)
\(m_{CO_2}=44.0,5=22\left(g\right)\)
\(m_{H_2}=1,5.2=3\left(g\right)\)
\(m_{N_2}=2.28=56\left(g\right)\)
\(m_{CuO}=3.80=240\left(g\right)\)
c) \(n_{Cl_2}=\dfrac{14,2}{71}=0,2\left(mol\right)\)
\(n_{H_2}=\dfrac{4,8}{2}=2,4\left(mol\right)\)
\(n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)\)
=> nhh = 0,2 + 2,4 + 0,1 = 2,7 (mol)
=> Vhh = 2,7.22,4 = 60,48(l)
\(a.n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\\ n_{Zn}=\dfrac{32,5}{65}=0,5\left(mol\right)\\ n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\\ n_{Cu}=\dfrac{19,2}{64}=0,3\left(mol\right)\)
\(b.m_{CO_2}=0,5.44=22\left(g\right)\\ m_{H_2}=1,5.2=3\left(g\right)\\ m_{N_2}=2.28=56\left(g\right)\\ m_{CuO}=3.80=240\left(g\right)\)
\(c.n_{Cl_2}=\dfrac{14,2}{71}=0,2\left(mol\right)\\ n_{H_2}=\dfrac{4,8}{2}=2,4\left(mol\right)\\ n_{O_2}=\dfrac{3,2}{32}=0,1\left(mol\right)\\\Rightarrow n_{hh}=0,2+2,4+0,1=2,7\left(mol\right)\\ \Rightarrow V_{hh}=2,7.22,4=60,48\left(l\right)\)
\(a,n_{Mg}=\dfrac{2,4}{24}=0,1(mol); n_{Zn}=\dfrac{32,5}{65}=0,5(mol)\\ n_{Al}=\dfrac{2,7}{27}=0,1(mol); n_{Cu}=\dfrac{19,2}{64}=0,3(mol)\)
\(b,m_{CO_2}=0,5.44=22(g);m_{H_2}=1,5.2=3(g)\\ m_{N_2}=2.28=56(g);m_{CuO}=3.80=240(g)\)
\(c,n_{hh}=n_{Cl_2}+n_{H_2}+n_{O_2}=\dfrac{14,2}{71}+\dfrac{4,8}{2}+\dfrac{3,2}{32}=0,2+2,4+0,1=2,7(mol)\\ V_{hh}=2,7.22,4=60,48(l)\)
\(a.m_{Mg}=0,1.24=2,4\left(g\right)\\ m_{Ca}=0,2.40=8\left(g\right)\\ b.n_{hh}=\dfrac{2,8}{28}+\dfrac{13,2}{44}=0,4\left(mol\right)\\ \Rightarrow V_{hh}=0,4.22,4=8.96\left(l\right)\)
\(Fe_2O_3+3H_2\rightarrow\left(t^o\right)2Fe+3H_2O\\ CuO+H_2\rightarrow\left(t^o\right)Cu+H_2O\\ Đặt:n_{Fe}=a\left(mol\right);n_{Cu}=0,5a\left(mol\right)\\ m_{hhB}=17,6\\ \Leftrightarrow56a+64.0,5a=17,6\\ \Leftrightarrow a=0,2\left(mol\right)\\ \Rightarrow n_{Fe}=0,2\left(mol\right);n_{Cu}=0,1\left(mol\right)\\ a,n_{H_2}=\dfrac{3}{2}.n_{Fe}+n_{Cu}=\dfrac{3}{2}.0,2+0,1=0,4\left(mol\right)\\ \Rightarrow V_{H_2\left(đktc\right)}=0,4.22,4=8,96\left(l\right)\\ b,Fe+2HCl\rightarrow FeCl_2+H_2\\ n_{HCl}=\dfrac{18,25}{36,5}=0,5\left(mol\right)\\ Vì:\dfrac{0,2}{1}< \dfrac{0,5}{2}\Rightarrow HCldư\\ \Rightarrow ddC:FeCl_2,HCldư\\ n_{FeCl_2}=n_{Fe}=0,2\left(mol\right)\Rightarrow m_{FeCl_2}=0,2.127=25,4\left(g\right)\\ n_{HCl\left(dư\right)}=0,5-0,2.2=0,1\left(mol\right)\)
\(\Rightarrow m_{HCl\left(dư\right)}=0,1.36,5=3,65\left(g\right)\)
\(a.V_{CO_2\left(dktc\right)}=0,25.22,4=5,6\left(l\right)\)
\(b.m_{Al_2O_3}=0,5.160=80\left(g\right)\)
