Question

FeS→So2→SO3→H2SO4→CuSO4→Cu (OH) 2

Answer 1

FeS+O2->SO2+Fe
2SO2+O2->2SO3
SO3+H2O->H2SO4
H2SO4+CuO->CuSO4+H2O
CuSO4+2H2O->Cu(OH)2+H2SO4

Answer 2

пасиб!)