a)ZnO+2HBr->ZnBr2+H2O b)FeO+H2S->FeS+H2O c)K2O+2HNO3->2KNO3+H2O d)Na2O+H2SO4->Na2SO4+H2O e)Cr2O3+2H3PO4 ->2CrPO4+3H2O f)3MnO+2H3PO4->Mn3(PO4)2+3H2O
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b) FeO + H2S----->FeS + H2O
c) K2O + 2HNO3----->2KNO3 + H2O
d) Na2O + H2SO4----->Na2SO4 + H2O
e) Cr2O3 + 2H3PO4----->2CrPO4 + 3H2O
f) 3MnO + 2H3PO4----->Mn3(PO4)2 + 3H2O
a)ZnO+2HBr->ZnBr2+H2O
b)FeO+H2S->FeS+H2O
c)K2O+2HNO3->2KNO3+H2O
d)Na2O+H2SO4->Na2SO4+H2O
e)Cr2O3+2H3PO4 ->2CrPO4+3H2O
f)3MnO+2H3PO4->Mn3(PO4)2+3H2O