离子交换法测定难溶电解质溶度积常数,一般选定PbC l2或PbI2的饱和溶液作为待测液,二者均为有毒有害物质且浓度高,废液直接排入下水道对水体造成严重的污染。改用浓度很低的溶液配制其待测液,降低污染,让本科生进行化学实验的同时也加强化学实验绿色化的理念。 Ion exchange method for the determination of insoluble electrolyte solubility product constant, generally selected PbCl2 or PbI2 saturated solution as the test solution, both of which are toxic and harmful substances and high concentrations of waste directly into the sewer water pollution caused serious . Switch to low concentrations of solution to be tested solution, reduce pollution, so that undergraduate chemistry experiments, but also to strengthen the concept of green chemistry experiments.