Осуществите превращения:
C2H5OH-CH3COH-CH3COOH-CH3COOC2H5
C2H2-C6H6-C6H5Br-C6H5OH
C2H5OH + CuO = CH3COH + Cu + H2O
CH3COH + Ag2O =CH3COOH + 2Ag
CH3COOH +C2H5OH = CH3COOC2H5 + H2O
3C2H2 = C6H6
C6H6 + Br2 = C6H5Br + HBr
C6H5Br + KOH = C6H5OH + KBr