Reactions of the hexaaqua ions with ammonia solution are complicated by the fact that the ammonia can have two quite different functions. It will probably be easiest to return to this page via the complex ions menu. The present page draws information from all of these pages, and you will find it easier to understand if you spend some time reading these other pages first. It would also be useful to read two more pages: the one describing the reactions of these ions with hydroxide ions, and the one explaining ligand exchange reactions. Important: Before you read this page, you need to know about the acidity of the hexaaqua ions. This page describes and explains the reactions between complex ions of the type n+ and ammonia solution. REACTIONS OF HEXAAQUA METAL IONS WITH AMMONIA SOLUTION This lab experiment allowed me to identify certain ions with the spot test which consisted in mixing some metal ions solutions with certain agents and observer their reactions.Reactions of aqua ions with ammonia solution The chemical properties of some elements enable us to identify them when they react with other elements. Finally, I proceed to place DMG and do the same steps that I did before adding DMG to each spot plate. After that, I added one drop of Ni2+, Na+ and the Ag+ to K4[Fe(CN)4. Then I added a drop of Pb2+ to K4(Fe and wait to observe if it have any physical change. The following step was to add K4 to the spot that contained Fe3+. Finally, in the text spot that had Ag+ I added 2 drops of potassium chromate. The next proceed was to add 2 drops of K2CrO4 in the plate that had Na+. Then, I added in the spot plate that contained Ni2+ the potassium chromate. Then I added potassium chromate to the Pb2+. I place 2 drops of K2CrO4 and added it to the Fe3+ spot plate. The next proceed was to add S2- from (NH4)2S to the new spots that contained the same ions as the procedure before. I proceed to do the same but now instead of hydrochloric acid I placed ammonia solution to the test tube that contained my ions and then wait to observe if they have any reactions. Next, I did the same with the Ni2+, the Na+, and the Ag+ to see the reactions. Then, to the plate that contained Pb2+ I added 2 drops of HCl. I proceed to add 3 drops of Fe3+ in the spot plate and then add HCl. The first proceed that I did was to add to each loop in the spot plate 3 to 4 drops of my metal ions in each spot and then added 2 to 3 drops of the agents HCl in each spot. Physical properties are the other categories and this is based in those substances that can be observed without inducing chemical change. Also, how the properties of a substance can be separated in two different categories: Chemical properties that refer to the way in which it reacts with other substances. You will use these results to develop a scheme for separating these cations when they are present in a mixture. You will initially compare the reactions of each of these with various reagents to see which form precipitates. In this experiment, you will look at part of the chemistry of five cations: Ag +, Ni2+, Na+, Pb2+, Fe3+ and an unknown. This experiment demonstrate the procedures used in developing a scheme for separating a group of cations. Identification of an unknown Cation Development of an Analysis Scheme
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