2C2H5COOH+Na2O--->2C2H5COONa+H2O
2C2H5COO- +2H+ +Na2O --->2C2H5COO- +2Na+ +H2O
2H+ +Na2O--->2Na+ +H2O
propanian sodu i woda
HCOOH+KOH--->HCOOK+H2O
HCOO- +H+ +K+ +OH- --->HCOO- +K+ +H2O
H+ +OH- --->H2O
metanian potasu i woda
2CH3COOH+Mg--->(CH3COO)2Mg+H2
2CH3COO- +2H+ +Mg --->2CH3COO- +Mg2+ +H2
2H+ +Mg --->Mg2+ +H2
etanian magnezu i wodór
CH3COOH+C2H5OH--st. H2SO4--->CH3COOC2H5+H2O
etanian etylu i woda