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a) 2HCOOH + Ba(OH)2 = (HCOO)2Ba + 2H2O
2H+ + 2COOH- + Ba2+ + 2OH- = 2HCOO- + Ba2+ + 2H2O
2H+ + 2OH- = 2H2O
b) FeOHCl + H2SO4 = FeSO4 + HCl + H2O
Fe2+ + OH- + Cl- = Fe2+ + SO42- + H+ + Cl- + H2O
OH- + H+ = H2O
с) NH4CH3COO + H2O = NH4OH + CH3COOH
NH4+ + CH3COO- + H2O = NH4+ + OH- + CH3COO- + H+
H2O = OH- + H+
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