1) 2СH3-CH2-COOH + Ca -> (CH3-CH2-COO)2Ca + H2
2CH3-CH2-COOH + MgO -> (CH3-CH2-COO)2Mg + H2O
CH3-CH2-COOH + NaOH -> CH3-CH2-COONa + H2O
CH3-CH2-COOH + Na2CO3 -> CH3-CH2-COONa + CO2 + H2O
CH3-CH2-COOH + NH3 -> CH3-CH2-COONH4
CH3-CH2-COOH + CH3-OH -> CH3-CH2-COOCH3 + H2O