• 2022-07-24
    欲配制pH=9的缓冲溶液,应选用的弱酸、碱为( )
    未知类型:{'options': ['NH2OH(羟氨) (Kb = 9.1×10[img=17x22]17de718f8566900.png[/img])', 'NH3·H2O (Kb = 1.8×10[img=17x22]17de718f914fb14.png[/img])', 'CH3COOH (Ka = 1.8×10[img=17x22]17de718f914fb14.png[/img])', 'HCOOH (Ka = 1.8×10[img=17x22]17de71902292f62.png[/img])'], 'type': 102}