a) CH3COOH+Fe(OH)2--->(CH3COO)2Fe+2H2O
b) C2H5COOH--H2O-->C2H5COO- +H+
c) C15H31COOH+KOH--->C15H31COOK+H2O
d) C3H7COOH+5O2--->4CO2+4H2O
e) 2C17H35COOH+Ca(OH)2--->(C17H35COO)2Ca+2H2O
f) (HCOO)2Mg--H2O-->2HCOO- +Mg2+
