Объяснение:
1)S+Zn-->ZnS (-2)
2) H2SO4+H2S-->S+SO2+2H2O (+4)
3)SO3+H2O-->H2SO4 (+6)
K2S(-2), H2SO3(+4), Na2SO4(+6), Al2S3(-2)
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Объяснение:
1)S+Zn-->ZnS (-2)
2) H2SO4+H2S-->S+SO2+2H2O (+4)
3)SO3+H2O-->H2SO4 (+6)
K2S(-2), H2SO3(+4), Na2SO4(+6), Al2S3(-2)