Осуществить преобразования CH3COH---CH3COOH---CH3COOC2H5---CH3COOH---CH3COONa---CH3COOH

CH3COH + Ag2O --> 2Ag + CH3COOH реакция ,, серебряного зеркала ,, с альдегидом ,
CH3COOH + C2H5OH ---H2SO4 --> CH3COOC2H5 + H2O
CH3COOC2H5OH + H2O --> CH3COOH + C2H5OH
CH3COOH + NaOH --> CH3COONa + H2O
CH3COONa + HCl --> NaCl + CH3COOH