A.C·Ka≥10-6 B.Ka1/Ka2≥104 C.C/Ka≥500
A.[H+]=KaC酸/C鹽 B.[H+]=C·Ka C.[H+]=Ka1·Ka2
A.[H+]=Ka·C酸/C鹽 B.[OH-]=C·Kw/Ka C.[OH-]=Kb·C堿/C鹽