分光光度法测定PbI_2的溶度积常数  

Solubility product determination of spectrophotometry for lead iodide

作　　者：王建鸣[1] 

机构地区：[1]黄冈师范学院成教学院,湖北黄州438000

出　　处：《黄冈师范学院学报》2004年第3期81-83,共3页Journal of Huanggang Normal University

摘　　要：实验采用分光光度法测定PbI2的溶度积原理是用NaNO2将PbI2饱和溶液中的I-氧化成I2,测定其吸光度,并在标准曲线上查找出对应的I-浓度.计算出PbI2的溶度积常数为KSP=1.37×10-8,与文献值相比误差较小.There have been several methods to measure the solubility product of PbI_2, but in college textbook of inorganic chemistry experiment only ion exchange resin method is adopted. We employ spectrophophotometric method to measure the solubility product of PbI_2. The result is ideal.

关 键 词：分光光度法 PbI2 溶度积常数 无机化学实验 碘化铅 

分 类 号：O645.1[理学—物理化学] O6-33[理学—化学]