摘要
本文研究了水溶液中重铬酸钾与硝酸银反应生成的沉淀产物的组成,以及反应物浓度和溶液体积对沉淀产物组成的影响。实验证明,K_2Cr_2O_7与AgNO_3反应生成的沉淀通常是Ag_2CrO_4和Ag_2Cr_2O_7的混合物。但在特定操作条件下可获得单一的Ag_2CrO_4沉淀。
A compositions of precipitate product are investigated for K_2Cr_2O_7 and AgNO_3 solutions.The effect of concentration and volume of solutions on the compositions are discussed.It shows that the precipitate product is generally a mixture of Ag_2CrO_4 and Ag_2Cr_2O_7,under special conditions the only precipitate of Ag_2CrO_4 may be formed.
关键词
水溶液
重铬酸钾
硝酸银
沉淀产物
precipitate product
silver chromate
silver dichromate
