• 2022-07-23
    欲配制 pH=4.50 的缓冲溶液,若用HAc-NaAc 体系,已知:[img=145x25]18033dbc9a41b5b.png[/img],则 HAc与 NaAc的浓度比为
    A: [img=32x43]18033dbca2aafae.png[/img]
    B: [img=32x43]18033dbcaaacee7.png[/img]
    C: [img=32x43]18033dbcb308de5.png[/img]
    D: [img=32x43]18033dbcbbad473.png[/img]