a)Zn+2HCl--->ZnCl2+H2
b) n\(_{Zn}=\frac{9,75}{65}=0,15\left(mol\right)\)
Theo pthh
n\(_{H2}=n_{Zn}=0,15\left(mol\right)\)
V\(_{H2}=0,15.22,4=3,36\left(l\right)\)
b) n\(_{HCl}=\frac{14,6}{36,5}=0,4\left(mol\right)\)
Theo pthh
n\(_{HCl}=2n_{Zn}=0,3\left(mol\right)\)
m\(_{HCl}dư=\left(0,4-0,3\right)36,5=3,65\left(g\right)\)
c) m\(_{HCl}=1,2.100=120\left(g\right)\)
C%=\(\frac{0,15.136}{120+9,75-0,3}.100\%=1,13\%\)