| 岳宣峰,张茹梅,马佳睿,谢遵园,章书怡,肖雨晴,王怡华,张延妮.化学通报,2023,86(7):884-889. |
| 滴定分析的终点误差随待测物浓度及反应平衡常数单调变化之商榷 |
| Question on monotonous varying of absolute value of end-point error with reaction equilibrium constant and concentration of the analyte in titrations |
| 投稿时间：2022-10-11 修订日期：2022-11-08 |
| DOI： |
| 中文关键词: 终点误差 反应平衡常数 浓度 配位滴定 酸碱滴定 |
| 英文关键词:end-point error reaction equilibrium constant concentration complexometric titration acid-base titration |
| 基金项目:陕西省自然科学基础研究计划项目(2022JZ-54)、陕西师范大学教学改革研究项目(22JG22)和陕西师范大学2022年大学生创新创业训练项目(202210718003x)资助 |
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| 中文摘要: |
| 为了获得滴定分析的终点误差随待测物浓度、反应平衡常数这两个因素变化的准确规律，推导了有别于林邦终点误差公式的终点误差计算式，根据该式可以判断每个因素对计算结果的影响，结合在配位滴定分析和酸碱滴定分析的具体应用，结果发现：这两个因素其大小的变化不会一定导致终点误差绝对值的单调变化。 |
| 英文摘要: |
| In order to acquire the accurate regulation as to how end-point error varying with two factors i.e. equilibrium constant of titration reaction and concentration of analyte, an other-than-Ringbom-formula end-point error formula is derived, where the effect of each factor on end-point error can be concluded. The applications of the new formula in both complexometric and acid-base titration demonstrate that the varying of either factor does not necessarily bring about monotonous varying of absolute value of the end-point error. |
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