Как из hcl получить h2s? составьте уравнение реакций

2HCl+Li2S=H2S+2LiCl

2HCl+K2S=H2S+2KCl

2HCl+Na2S=H2S+2NaCl

2HCl+(NH4)2S=H2S+2NH4Cl

2HCl+BaS=H2S+BaCl2

2HCl+CaS=H2S+CaCl2

2HCl+MgS=H2S+MgCl2

2HCl+SrS=H2S+SrCl2

6HCl+Al2S3=3H2S+2AlCl3

6HCl+Cr2S3=3H2S+2CrCl3

2HCl+FeS=H2S+FeCl2

6HCl+Fe2S3=3H2S+2FeCl3

2HCl+NiS=H2S+NiCl2

2HCl+CoS=H2S+CoCl2

2HCl+MnS=H2S+MnCl2

2HCl+ZnS=H2S+ZnCl2

2HCl+Ag2S=H2S+2AgCl

2HCl+HgS=H2S+HgCl2

2HCl+PbS=H2S+PbCl2

2HCl+SnS=H2S+SnCl2

2HCl+CuS=H2S+CuCl2