СH3CH2CH2OH->(+CuO)->X->CH3CH2COOH
CH3CH2COOH->X->C2H6
C6H5COOH->X->C6H6
2CH3CH2COOH + Cu(OH)2 = (CH3CH2COO)2Cu + 2H2O
наверно так
2 и 3 не знаю