Ecuația reacției chimice:
4 x=2
Zn + 2HCl -----> ZnCl₂ + H₂↑
2 1
Rezolvarea problemei:
[tex]M_{HCl}=A_H+A_{Cl}=1+35.5=36.5\ g/mol\\m_{HCl}=146g\\n=\frac{m}{M}=\frac{143}{36.5}=4\ moli\ HCl\\\\n_{H_2}=x=2\ moli\\M_{H_2}=2*A_H=2*1=2\ g/mol\\n=\frac{V}{V_M}=\frac{V}{22.4}\implies\ V=n*22.4=2*22.4=44.8\ L\ H_2[/tex]