知識(shí)貝殼
知識(shí)貝殼
An indicator used for titrations that involve aprecipitation reaction. The method dependsupon the fact that at the equivalence pointthere is a change in the nature of the ions ab-sorbed by the precipitate particles. Fluores-cein-a fluorescent compound -is ......（本文共 748 字 ） [閱讀本文] >>