1) 2Al+6HCl--->2AlCl3 +3H2
n\(_{H2}=\frac{13,44}{22,4}=0,6\left(mol\right)\)
Theo pthh
n\(_{Al}=\frac{2}{3}n_{H2}=0,2\left(mol\right)\)
%m\(_{Al}=\frac{0,2.27}{20}.100\%=27\%\)
%m\(_{Cu}=100-27=78\%\)
2)Theo pthh
n\(_{HCl}=2n_{H2}=1,2\left(mol\right)\)
m\(_{HCl}=01,2.36,5=43,8\left(g\right)\)
c) 2Cu+O2--->2CuO
4Al+3O2----->2Al2O3
n\(_{Cu}=\frac{20-5,4}{64}=\)0,23(mol)
Theo pthh1
n\(_{O2}=2n_{Cu}=0,46\left(mol\right)\)
Theo pthh2
n\(_{O2}=\frac{3}{4}n_{Al}=0,15\left(mol\right)\)
Σn\(_{O2}=0,15+0,46=0,61\left(mol\right)\)
V\(_{O2}=0,61.22,4=13,664\left(l\right)\)
