| 摘要: |
| 在酸碱滴定的双指示剂法示例中,用K2Cr2O7+K2CrO4取代Na2CO3+NaHCO3,并改用溴甲酚绿和酚酞作指示剂.其结果表明,本法滴定的终点前颜色变化较明显,终点较敏锐,准确度较好. |
| 关键词: 酸碱滴定 双指示剂法 K2Cr2O7+K2CrO4 |
| DOI： |
| 投稿时间：1995-03-19修订日期：1996-02-05 |
| 基金项目: |
|
| On Using K2Cr2O7+K2CrO4 as Means of Double Indication |
|
Xie Qiuyuan
|
| (Dept. of Pharmacology, Guilin Medical College, Guilin 541001) |
| Abstract: |
| In the use of double indication in acid and alkali titration, using K2CrO7 + K2CrO4.instead of Na2CO3 + NaHCO3, and bromocresol green and phenolphthalein as indicators,the result shows that final colours change evidently in the titration with sharp destination and good accuracy. |
| Key words: acid and alkali titration means of double indicators K2Cr2O7+K2CrO4 |
