帮我改论文【摘要】硫酸亚铁铵制备和测定实验是一个经典的实验常常被用作各大化学竞赛的比赛项目考验学生对化学理论知识的理解和无机实验的规范操作该实验也是本专业基础化学学科中非常具有典型性的无机分析化学类实验该实验涵盖了水浴加热过滤洗涤溶解蒸发结晶等基本操作利用氧化还原滴定法测定硫酸亚铁铵的纯度。本篇论文探究了硫酸亚铁铵制备的相关条件在硫酸亚铁铵制备过程中不同比例下的试剂硫酸铵和硫酸亚铁用量析出不同产量

【Abstract】The preparation and determination experiment of ferrous ammonium sulfate is a classic experiment, which is often used as a competition project in various chemical competitions, testing students' understanding of chemical theory and standardized operation of inorganic experiments. This experiment is also a very typical inorganic analytical chemistry experiment in the basic chemistry discipline of this major. The experiment covers basic operations such as water bath heating, filtration, washing, dissolution, and evaporation and crystallization, and uses redox titration to determine the purity of ferrous ammonium sulfate. This paper explores the relevant conditions for the preparation of ferrous ammonium sulfate. Different proportions of reagents (ammonium sulfate and ferrous sulfate) were used in the process of preparing ferrous ammonium sulfate to precipitate different yields and purities of ferrous ammonium sulfate. After experimental research, it is concluded that the ratio of the amount of the main raw materials used to prepare ferrous ammonium sulfate with the highest purity is 1:1.02 for the substance amount ratio of ferrous sulfate to ammonium sulfate. 【Keywords】Preparation of ferrous ammonium sulfate; mole ratio; purity of ferrous ammonium sulfate