acid
基礎(chǔ)科學(xué)

        A substance that gives rise to hydro-gen ions (or H3O+) when dissolved in wa-ter. An acid in solution will have a pH below7.This definition does not take into accountthe competitive behavior of acids in solventsand it refers only to aqueous systems. TheLo......（本文共 911 字）     [閱讀本文] >>