A.0.1% B.0.01% C.99% D.10% E.1%
A.7 B.3 C.4 D.5 E.6
A.90%解離時(shí)的pH值 B.99%解離時(shí)的pH值 C.全部解離時(shí)的pH值. D.50%解離時(shí)的pH值 E.不解離時(shí)的pH值