Analysis and Identification of an Ionic Compound using Logic Trees
Introduction: It is important to be able to analyze and identify compounds especially in industry where even slight changes in compound structure or concentration could have disastrous effects. In this project, comprising of three parts, cation and anion elimination and confirmation tests are performed. Two logic trees are then constructed from the test results. These logic trees are used to identify the anion and cation of an unknown ionic compound.
Materials and Methods: Project Part 1: Cation analysis
In the first part of this project, two cation elimination tests and one cation confirmation test were performed. 10 drops of 4 cation solutions: potassium, zinc(II), copper(II)
…show more content…
The solution was heated for 10 minutes and distilled water was added to it periodically to ensure that the volume of solution in the beaker stayed the same. The solution was then spilt equally into two centrifuge tubes and the solution was centrifuged until there was no more suspended precipitate. The supernatant was then decanted into a centrifuge tube. This was the stock solution. The logic tree from part two was used to analyze and identify the unknown …show more content…
For the chloride test, addition of AgNO₃ formed a white precipitate as silver chloride is insoluble, addition of NH₄OH dissolved precipitate as this forms a silver ammine complex which is soluble, finally the addition of HNO₃ neutralizes the ammonia and a white precipitate reforms (silver chloride). For the carbonate test, when H₂SO₄ is added to the solid carbonate fizzing occurs, which indicates that a gas has been made. As the gas reacts with the drop of Ba(OH)₂ suspended above the solution, a white precipitate forms within the drop. This indicates the formation of barium carbonate which is not soluble, therefore, the gas given off by the carbonate must be carbon
Solid A was identified to be sodium chloride, solid B was identified to be sucrose, and Solid C was identified to be corn starch. Within the Information Chart – Mystery White Solid Lab there are results that distinguishes itself from the other 4 experimental results within each test. Such as: the high conductivity and high melting point of sodium chloride, and the iodine reaction of corn starch. Solid A is an ionic compound due to its high melting point and high electrical conductivity (7), within the Information Chart – Mystery White Solid Lab there is only one ionic compound which is sodium chloride, with the test results of Solid A, it can be concluded that is a sodium chloride. Solid B was identified as sucrose due to its low electrical
The purpose for this lab was to use aluminum from a soda can to form a chemical compound known as hydrated potassium aluminum sulfate. In the lab aluminum waste were dissolved in KOH or potassium sulfide to form a complex alum. The solution was then filtered through gravity filtration to remove any solid material. 25 mLs of sulfuric acid was then added while gently boiling the solution resulting in crystals forming after cooling in an ice bath. The product was then collected and filter through vacuum filtration. Lastly, crystals were collected and weighed on a scale.
The purpose of the Unknown White Compound Lab was to identify the unknown compound by performing several experiments. Conducting a solubility test, flame test, pH paper test, ion test, pH probe test, conductivity probe test, and synthesizing the compound will accurately identified the unknown compound. In order to narrow down the possible compounds, the solubility test was used to determine that the compound was soluble in water. Next, the flame test was used to compare the unknown compound to other known compounds such as potassium chloride, sodium chloride, and calcium carbonate. The flame test concluded that the cation in the unknown compound was potassium. Following, pH paper was used to determine the compound to be neutral and slightly
The primary goal of this laboratory project was to identify an unknown compound and determine its chemical and physical properties. First the appearance, odor, solubility, and conductivity of the compound were observed and measured so that they could be compared to those of known compounds. Then the cation present in the compound was identified using the flame test. The identity of the anion present in the compound was deduced through a series of chemical tests (Cooper, 2009).
Introduction: Someone in a restaurant has suddenly fallen ill and a mystery powder has been discovered with the victim. As the chief investigator, your duty is to identify the mystery substance through a lab. In this lab, it will consist of five known compounds and one unknown compound. Your job is to distinguish which one out of the five substances is the mystery powder. To figure out the mystery matter you will have to compare their physical and chemical properties and match them with the appropriate compound. Furthermore, you will compare their reactions with water, universal indicator, vinegar and iodine solution to discover what the mystery powder is.
Once the mixture had been completely dissolved, the solution was transferred to a separatory funnel. The solution was then extracted twice using 5.0 mL of 1 M
This section outlines and describes the various elements of the program logic model (see Figure 2). Our logic model is an important evaluative tool as it helps to explain the ideas behind the development of the DCD guidelines and the reasons why DCD programs will lead to positive outcomes in deceased organ donation.
Benzyl bromide, an unknown nucleophile and sodium hydroxide was synthesized to form a benzyl ether product. This product was purified and analyzed to find the unknown in the compound.
The objectives of this experiment were to use qualitative schemes and basic solubility rules to determine the cationic composition of an unknown sample. Specifically, for this experiment, the unknown sample included some combination of Ag+, Pb2+, and Hg22+ cations.
Hallucinations and Revelations: Logical Analysis in the Erlking. As the “Erlking” chronicles the last moments of life of a young boy in a gothic setting, the hurried last words between a father and son are heard and leave the reader with the question, what is real? The child fears the Erlking who is supposedly following them as they ride quickly on horseback through the windy night, where as the father claims nothing at all is there, and that each fear can be logically explained and discredited. Due to this, it is easy to assume that the “Erlking”, by Goethe, is making an anti-Enlightenment statement, and because of that, all events and occurrences can have a solely supernatural explanation.
Once this happens the cations will be surrounded by water molecules, and so will the anions. This is called the solution process. This makes a lower order of organization of the ions. The ions are now in a simpler form so they have higher mobility, and can carry electrical particles to conduct electricity. Salts that are completely dissolvable in water are usually strong electrolytes. The salts that are barely dissolvable are weak. The strength of an electrolyte is measured by its ability to conduct electricity.
1. The labels have fallen off of three bottles thought to contain hydrochloric acid, or sodium chloride solution, or sodium hydroxide solution. Describe a simple experiment which would allow you to determine which bottle contains which solution.
PC-SK standard cation exchange membranes and PC-SA standard anion exchange membranes are used in the stack. Information given by the manu...
cations. However, There are several limitations in these approaches due to the lack of dynam...
Trees are one of the most important parts of the biosphere. They provide oxygen, which is one of the largest producers of life. Humans live and strive off of oxygen every second of their lives. Not just humans need oxygen to survive and thrive on Earth, but animals, and other creatures on the planet do as well. Trees are a huge part of all life and if they were gone, there would consequently be no form of life. Not only do trees create all forms of life, but they create beautiful surroundings for an area and create a comfortable and shady environment for all surrounding life. Even though trees seem to be everywhere you look, the planet is losing billions upon billions of them a year. Anywhere from three billion to six billion trees are lost every year, ("How Many Trees Are Cut Down Every Year? Rainforest Action Network Blog. N.p., n.d. Web. 10 Apr. 2014”). With this fact in thought, it shows that planting one tree can create a bigger difference than you realize.