In the mixed solution of AgNO3, Cu (NO3)2 and Zn (NO3)2, add a certain amount of iron powder, filter after full reaction, add dilute hydrochloric acid in the filter residue, and gas will be produced. The following conclusions are correct:() A. There must be Fe (NO3)3 in the filtrate B. The filter residue contains only Ag and Cu, and there must be no Zn. C. There must be Ag, Cu and Fe in the filter residue, and there must be no Zn. D. There must be Ag, Cu, Fe and Zn in the filter residue

In the mixed solution of AgNO3, Cu (NO3)2 and Zn (NO3)2, add a certain amount of iron powder, filter after full reaction, add dilute hydrochloric acid in the filter residue, and gas will be produced. The following conclusions are correct:() A. There must be Fe (NO3)3 in the filtrate B. The filter residue contains only Ag and Cu, and there must be no Zn. C. There must be Ag, Cu and Fe in the filter residue, and there must be no Zn. D. There must be Ag, Cu, Fe and Zn in the filter residue

In the order of metal activity, zinc > iron > hydrogen > copper > silver, iron can not react with zinc nitrate, so there must be no zinc in the filter residue. If there is gas generated by adding hydrochloric acid into the filter residue, there must be iron, which indicates that the iron powder added is excessive. Iron can react with silver nitrate to form silver and ferrous nitrate, and react with copper nitrate to form copper and ferrous nitrate and copper. Therefore, there must be silver and copper, and the filtrate will not contain iron nitrate. Select C.

In the order of metal activity, zinc > iron > hydrogen > copper > silver, iron can not react with zinc nitrate, so there must be no zinc in the filter residue. If there is gas generated by adding hydrochloric acid in the filter residue, there must be iron, which indicates that the iron powder added is excessive. Iron can react with silver nitrate to form silver and ferrous nitrate, and react with copper nitrate to form copper and ferrous nitrate and copper. Therefore, there must be silver and copper, and the filtrate will not contain iron nitrate. Select C.

In the mixed solution of AgNO3, KNO3 and Cu (NO3)2, after adding a certain amount of iron powder to fully react, filter, wash the filter residue, put the filter residue into hydrochloric acid, bubbles are generated, and the ions absent in the filtrate are Nitrate ion Iron ion Ferrous ion Potassium ion Please give me the analysis process In the mixed solution of AgNO3, KNO3 and Cu (NO3)2, after adding a certain amount of iron powder to fully react, filter, wash the filter residue, put the filter residue into hydrochloric acid, bubbles are generated, and the ions not present in the filtrate are Nitrate ion Iron ion Ferrous ion Potassium ion Please analyze the process. In the mixed solution of AgNO3, KNO3 and Cu (NO3)2, after adding a certain amount of iron powder to fully react, filter, wash the filter residue, put the filter residue into hydrochloric acid, bubbles are generated, and the ions not present in the filtrate are Nitrate ion Iron ion Ferrous ion Potassium ion Please give me the analysis process

After the filter residue is put into the hydrochloric acid, the gas will be produced, which indicates that there is the reaction of the metal before H. The metal element in the title is only K, Fe is the metal before H, but because Fe does not react with K+, there is no metal K in the filter residue, so there must be Fe element in the remaining filter residue, that is, iron is excessive, and then the substance that can react with Fe does not exist, while nitrate ion and ferrous ion are separated.

After the filter residue is put into the hydrochloric acid, the gas will be produced, which indicates that there is the reaction of the metal before H. The metal element in the title is only K, Fe is the metal before H, but because Fe does not react with K+, there is no metal K in the filter residue, so there must be Fe element in the remaining filter residue, that is, the iron is excessive, and then the substance that can react with Fe does not exist, while the nitrate ion and ferrous ion are...