даю 12 монет,ставлю спасибо и 5 звезд))

CH3-CH2CL + HCN = CH3-CH2CN + HCL
CH3-CH2CN + 2H2O = CH3-CH2-COOH + NH3
2CH3-CH2-COOH + 2Na = 2CH3-CH2-COONa + H2
CH3-CH2-COONa + CH3CL = СH3-CH2-COOCH3 + NaCL