The purpose of this experiment is to identify some commonly occurring anions & to study some of the reactions used for their identification.
You must first determine to which of the three groups the various anions belong. Since no two people observe the same event in exactly the same way it is important to also conduct specific confirmation tests on the known samples of each anion. This information will help identify the anion present in the unknown solution. After determining to which group the unknown solution belongs the specific confirmation test will enable you to conclusively identify which anion is present in the unknown solution.
1. Before beginning, set …show more content…
| | |
| |NR |White ppt |Not dissolved |Dissolved w/ NH4OH |
|Chloride | | | | |
| |NR |Yellow ppt |Not dissolved |Reddish-violet color |
|Iodine | | | | |
| |NR |Yellow ppt |Dissolved |Yellow ppt |
|Phosphate | | | | |
| |NR |NR |NR |White ppt; NO dissolve w/ HCl |
|Sulfate | | | | |
| |Gas & Odor |Brown ppt |Not dissolved |Gas & Odor; White ppt w/ warming;|
|Sulfide | | | | |