Осуществить превращение: C2H4--C2H5CL--C2H5OH--H3C-COH--H3C-COOH

C2H4+HCl--t°--> C2H5Cl C2H5Cl+KOH (H2O)--->C2H5OH + KCl C2H5OH--CuO,t°--> CH3-COH+H2 CH3-COH--K2Cr2O7, H2SO4--> CH3-COOH

CH2=CH2 + HCl -> CH3-CH2-Cl CH3-CH2-Cl + NaOH -> CH3-CH2-OH + NaCl CH3-CH2-OH + + CuO-> CH3-COH + Cu + H2O CH3COH+ Ag2O -> CH3-COOH + 2Ag