Безотлагательно!! 50 баллов даю

1.

а) NaOH + HCl = NaCl + HO

Na + OH + H + Cl = Na + Cl + HO

OH + H = HO.

б) ZnO + HSO = ZnSO + HO

ZnO + 2H + SO = Zn + SO + HO

ZnO + 2H = Zn + HO

в) Ba + 2HCl = BaCl + H

Ba + 2H + 2Cl = Ba + 2Cl + H

Ba + 2H = Ba + H

г) NaCO + CaCl = 2NaCl + CaCO

2Na + CO + Ca + 2Cl = 2Na + 2Cl + CaCO

CO + Ca = CaCO

2.

а) Ba BaO

2Ba + O = 2BaO

б) NaOH NaNO

NaOH + HNO = NaNO + HO

3.

а) KS + Fe(NO) = FeS + 2KNO

2K + S + Fe + 2NO = FeS + 2K + 2NO

S + Fe = FeS

б) BaCO + 2HCl = BaCl + CO + HO

BaCO + 2H + 2Cl = Ba + 2Cl + CO + HO

BaCO + 2H = Ba + CO + HO

в) 2NaOH + CO = NaCO + HO

2Na + 2OH + CO = 2Na + CO + HO

2OH + CO = CO + HO

г) Mg + 2HCl = MgCl + H

Mg + 2H + 2Cl = Mg + 2Cl + H

Mg + 2H = Mg + H