8. ZnS → ZnO → Na₂ZnO₂ → ZnCl₂

\(2ZnS+3O_2\xrightarrow{t}2ZnO+2SO_2\uparrow\)

\(ZnO+2NaOH\xrightarrow{t}Na_2ZnO_2+H_2O\)

\(Na_2ZnO_2+4HCl\rightarrow ZnCl_2+2NaCl+2H_2O\)

Ответ: ZnS → ZnO → Na₂ZnO₂ → ZnCl₂.