摘要
碘化钾是化学实验常用的试剂,在使用中其溶液在空气中遇到氧气容易被氧化成碘单质,在酸性条件下氧化更快.经过理论计算表明,配制碘化钾溶液时加入适量的结晶碳酸钠,可使碘离子在碱性环境下稳定存在,能长期保存.
Potassium iodine is a commonly used reagent in chemical experiments.It is found that its solution is easily oxidized to iodine when it meets oxygen in the air,and it oxidized faster under acidic conditions.The theoretical calculation showed that the iodine ion could exist stably in alkaline environment and could be preserved for a long time by adding appropriate amount of crystalline sodium carbonate to the preparation of potassium iodide solution.
作者
王都留
燕翔
张少飞
杨建东
WANG Du-liu;YAN Xiang;ZHANG Shao-fei;YANG Jian-dong(School of Agriculture and Forestry Technology,Longnan Teachers College,Chengxian Gansu 742500)
出处
《甘肃高师学报》
2020年第2期30-32,共3页
Journal of Gansu Normal Colleges
基金
甘肃省自然科学基金项目“核壳结构有机无机复合纳米材料的制备及应用研究”(17JR5RK008)
陇南师专校级教改项目“高职专业《基础化学》课程考核方式的改革与实践”(GXGG201805).
关键词
碘化钾
碱性环境
保存条件
热力学分析
potassium iodide
alkaline environment
storage condition
thermodynamic analysis