氢氧化钠可以和有机物中的羧基,酚羟基,-X,-COOR后面两种是水解CH3COOH+NaOH==CH3COONa+H2OC6H5OH+NaOH==C6H5ONa+H2OCH3CH2Br+NaOH==加热==CH3CH2OH+NaBr