a, \(n_{H_2}=\dfrac{4,958}{24,79}=0,2\left(mol\right)\)
PT: \(M+2HCl\rightarrow MCl_2+H_2\)
Theo PT: \(n_M=n_{H_2}=0,2\left(mol\right)\)
\(\Rightarrow M_M=\dfrac{13}{0,2}=65\left(g/mol\right)\)
b, \(n_{HCl}=2n_{H_2}=0,4\left(mol\right)\Rightarrow V_{HCl}=\dfrac{0,4}{2}=0,2\left(l\right)\)
c, \(n_{ZnCl_2}=n_{H_2}=0,2\left(mol\right)\)
\(\Rightarrow m_{ZnCl_2}=0,2.136=27,2\left(g\right)\)