2HCOOH + Mg ---> (HCOO)2Mg + H22HCOO(-) + 2H(+) + Mg ---> 2HCOO(-) + Mg(2+) + H22H(+) + Mg ---> Mg(2+) + H2HCOOH + KOH ---> HCOOK + H2O
HCOO(-) + H(+) + K(+) + OH(-) ---> HCOO(-) + K(+) + H2O
H(+) + OH(-) ---> H2O
(HCOO)2Ba + Na2SO4 ---> BaSO4 + 2HCOONa
2HCOO(-) + Ba(2+) + 2Na(+) + SO4(2-) ---> BaSO4 + 2HCOO(-) + 2Na(+)
Ba(2+) + SO4(2-) ---> BaSO4
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2HCOOH + Mg ---> (HCOO)2Mg + H2
2HCOO(-) + 2H(+) + Mg ---> 2HCOO(-) + Mg(2+) + H2
2H(+) + Mg ---> Mg(2+) + H2
HCOOH + KOH ---> HCOOK + H2O
HCOO(-) + H(+) + K(+) + OH(-) ---> HCOO(-) + K(+) + H2O
H(+) + OH(-) ---> H2O
(HCOO)2Ba + Na2SO4 ---> BaSO4 + 2HCOONa
2HCOO(-) + Ba(2+) + 2Na(+) + SO4(2-) ---> BaSO4 + 2HCOO(-) + 2Na(+)
Ba(2+) + SO4(2-) ---> BaSO4