1.
羧基上的OH的
取代反应。如:
①
酯化反应:R-COOH+R′OH→RCOOR′+H2O
②成酰卤反应:3RCOOH+PCl3→3RCOCl+H3PO3
③成酸酐反应:RCOOH+RCOOH (加热)→R-COOCO-R+H2O
④成酰胺反应:CH3COOH+NH3→CH3COONH4 ;
CH3COONH4(加热)→CH3CONH2+H2O
⑤与金属反应:2CH3COOH+2Na→2CH3COONa+H2↑
2CH3COOH+Mg→(CH3COO)2Mg+H2↑
2. Br2+H2O==HBr+HBrO 没有其他反应了 假设反应则生成HBr,与
强酸制弱酸原理矛盾