固体粉末由黑变红,液体由香味变为具有刺激性气味。CuO+C2H5OH→(加热)Cu+CH3CHO+H2O
氧化铜表面出现黑红交替的现象C2H5OH + CuO ==加热== CH3CHO + Cu + H2O2Cu + O2 ==加热== 2CuO
CuO+C2H5OH→(加热)Cu+CH3CHO+H2O
CH3CH2OH + CuO =加热= CH3CHO + Cu + H2O