acid-base indicator
工业科技

        An indicator that iseither a weak base or a weak acid andwhose dissociated and undissociated formsdiffer markedly in color. The color changemust occur within a narrow pH range. Ex-amples are methyl orange and phenol-phthalein.一种为弱酸或弱碱的指示剂。其解离和未解离状态的颜色有......（本文共 250 字）     [阅读本文] >>