磺基水杨酸合铁(Ⅲ)配合物的组成及稳定常数的测定实验改进的研究

Study on the Improvement of the Determination of the Formula and the Stabel Constant of Sulfosalicylate Iron (III) Complex

磺基水杨酸合铁(Ⅲ)实验是大学基础课程中的一个基本实验,但是该实验的试剂选择存在多种方案,不同的试剂必然使实验结果有差异性,为了合理地优化和挑选出磺基水杨酸合铁(Ⅲ)配合物的组成及稳定常数的测定实验最合适的试剂,本实验系统地对比了由盐酸和高氯酸分别提供酸性环境,以及氯化铁和硫酸铁铵分别作为反应配体对实验结果的影响。实验结果表明,与其他组合相比,使用盐酸提供酸性反应环境和氯化铁提供反应配体的组合,实验效果仍然保持一致,但药品的使用量变得更少,降低了实验的成本,提高了实验效率,更加符合资源节约和绿色化学的要求,也为实际的应用提供了更好的选择。

The experiment of Sulfosalicylate Iron(III)Complex is a basic experiment in college basic courses,but there are multiple options for selecting reagents for this experiment,and different reagents inevitably lead to different experiment results.In order to reasonably optimize and select the reagents required for the determination of the formula and the stable constant of sulfosalicylate iron(III)complex,a systematic comparison was made between hydrochloric acid and perchloric acid providing acidic environments,and the effects of iron chloride and ammonium iron sulfate as reaction ligands on the experimental results.The results indicated that compared to other combinations,the combination of using hydrochloric acid to provide an acidic reaction environment and iron chloride to provide reaction ligands had similar experimental results,less drug use,which reduced the cost of the experiment,improved the efficiency of the experiment,and was more suitable for the requirements of resource conservation and green chemistry,and also provided a better choice for practical applications.