显碱性.
等物质的量的的醋酸和氢氧化钠完全反应.
CH3COOH+NaOH=CH3COONa+H2O
生成的醋酸钠是强碱弱酸盐,水解会显碱性.
CH3COO- +H2O=可逆=CH3COOH+OH-