CH3-CH2-COONa + H2O -> CH3-CH2-COOH + NaOH
2) CH3-CH2-COOH + Cl2 -> CH3-CHCl-COOH + HCl
3) CH3-CHCl-COOH + CH3-CH2OH -> CH3-CHCl-COO-C2H5 + H2O
4) CH3-CHCl-COO-C2H5 + H2O -> CH3-CHCl-COOH + CH3-CH2OH
CH3-CH2-COONa + H2O -> CH3-CH2-COOH + NaOH
2) CH3-CH2-COOH + Cl2 -> CH3-CHCl-COOH + HCl
3) CH3-CHCl-COOH + CH3-CH2OH -> CH3-CHCl-COO-C2H5 + H2O
4) CH3-CHCl-COO-C2H5 + H2O -> CH3-CHCl-COOH + CH3-CH2OH