NaCl->HCl ->H2 -> H2S

Question

NaCl->HCl ->H2 -> H2S

Answer 1

HSO3F ( жидк.) + NaCl = NaSO3F+ HCl

Answer 2

2NaCl + H2SO4=Na2SO4 + HCl
2HCl + Zn=ZnCl2 + H2 
H2 + S = (при нагревании) H2S