Mg + 2HCl --> MgCl2 + H2
Fe + 2HCl --> FeCl2 + H2
2Al + 6HCl --> 2AlCl3 + 3H2
=> nHCl = 2.nH2
Theo ĐLBTKL: \(m_X+m_{HCl}=m_{muoi}+m_{H_2}\)
=> \(10,7+36,5.2.n_{H_2}=35,55+2.n_{H_2}\)
=> \(n_{H_2}=0,35\left(mol\right)\)
=> \(V_{H_2}=0,35.22,4=7,84\left(l\right)\)