a) 2Al+6HCl---->2AlCl3+3H2
ZnO+2HCl---> ZnCl2+H2O
n\(_{H2}=\frac{13,44}{22,4}=0,6\left(mol\right)\)
Theo pthh1
n\(_{Al}=\frac{2}{3}n_{H2}=0,4\left(mol\right)\)
%m\(_{Al}=\frac{0,4.27}{27}.100\%=\)40%
%m\(_{ZnO}=100-40=60\%\)
B) Theo pthh1
n\(_{HCl}=2n_{H2}=1,2\left(mol\right)\)
m\(_{ZnO}=27-\left(0,4.27\right)=16,2\left(g\right)\)
n\(_{ZnO}=\frac{16,2}{81}=0,2\left(mol\right)\)
Theo pthh2
n\(_{HCl}=2n_{ZnO}=0,4\left(mol\right)\)
\(\sum n_{HCl}=1,6\left(mol\right)\)
m\(_{HCl}=1,6.36,5=58,4\left(g\right)\)
m\(_{dd}=\frac{58,4.100}{29,2}=200\left(g\right)\)
c)Tự lm nhé