+Вr2 +КОН +СuО(О)
С2Н6---→ Х -------→У ---------→Z----→СН3СООН
C2H6+Br2-->C2H5Br + HBr
C2H5Br + KOH--->C2H5OH + KBr
C2H5OH + CuO--->Cu + CH3COH +H2O
CH3COH + [O]---> CH3COOH