The purpose of this activity is to determine which of the ions in a series of ionic compounds (the cation or the anion) is responsible for the colors in a simple flame test students will perform. An experiment to learn the various elimination and confirmation tests of the ionic compound 2,071 words 7 pages the use of compensatory strategies in the event of communication breakdown 890 words 3 pages lab report on organic compounds in foods 537 words 4 pages. Before the last test (the flame color test) four compounds are left for this experiment: potassium chloride, magnesium sulphate, ammonium sulphate and ammonium chloride the other ionic compounds were previously eliminated as a result of the other tests. Laboratory 4: determining the identity of an unknown compound you may use these same test tubes for the rest of the experiment (20 drops) of each known compound into your labeled test tubes 3 add 3 drops of ammonia to each test tube and stir with a clean stirring rod remove the stirring rod and touch a drop. Project 2: parts 1, 2, & 3 study a possible source of interference for the various anion elimination and confirmation tests true which of the following is a nitrate ion of this week's experiment is to use the cation and anion logic trees to determine the identity of an unknown solid ionic compound true which of the following is a.
Determination of cations and anions through elimination and confirmation tests by: symantha resendiz introduction a topic of great importance to all scientists is the identification of compounds, which is relevant in all aspects of their work in some way shape or form. For example, if a compound has no charge, the oxidation numbers of each of its atoms must add up to zero if the compound is a polyatomic ion with a charge of -1, the oxidation numbers must add up to -1, etc. Learning objectives recognize the various ions that cause a salt to generally be soluble/insoluble in water to predict whether a compound will be soluble in a given solvent, remember the saying, “like dissolves like” molecular, ionic, and complete ionic equations precipitation reactions can be written as molecular, ionic, or.
As a member, you'll also get unlimited access to over 75,000 lessons in math, english, science, history, and more plus, get practice tests, quizzes, and personalized coaching to help you succeed. Used to separate the cation from the anion, potentially removing a source of cation interference for the various anion elimination and confirmation tests the unknown solid is dissolved in water and then reacted with sodium carbonate. Chemists often have to identify the composition of unknown substances this experiment involves identifying the cations and anions in various salt solutions.
Chem 111 lab study play a possible source of interference for the various anion elimination and confirmation tests true of this week's experiment is to use the cation and anion logic trees to determine the identity of an unknown solid ionic compound true. Investigating the determining characteristics of cations and anions essay sample introduction: the purpose of this lab was to study the specific characteristics of cations and anions, and ultimately to be able to identify an unknown substance based on our studies and tests using the logic trees developed through the experiment. In this experiment, elimination and confirmation tests of various cations and anions were studied in order to use the observations to determine an unknown ionic compound logic trees were developed from the observed behaviors for cations and anions. An ionic precipitation reaction occurs when two ionic solutions are mixed and one of the combinations of ions in the new solution creates an insoluble compound, which forms a solid in the solution a solution in which a precipitation reaction occurs looks cloudy, may be white or colored, and if left still, the precipitate typically settles to.
Learn about ionic compounds each atom normally has a certain number of electrons, but sometimes they pick up an extra electron or lose one through a process known as electron transfer  the result is an ion , which has an electric charge. Particles in the compound in the solid phase, raising their melting point in this experiment, you will conduct tests on various compounds, then classify each group as ionic or covalent based on the. In this project the student will become acquainted with basic information on the chemistry of ions and ionic bonding ions are defined as atoms having an electric charge as a result of losing or gaining one or more electrons an ionic bond by definition is a chemical bond between a metal and a non.
E9 properties of ionic compounds sea water and sodium chloride crystal experiments if the water is removed from a solution of an ionic compound, eg by boiling it off, the keep your crystals for the electrical conductivity tests in the next experiment. Formulas and percent compositions of ionic compounds strand molar relationships empirical formula determination: one of the most important things we can learn about a compound is its chemical formula the formula for a compound that expresses the smallest whole- various elements that are present one way to do this is to measure the. No and cao are toxic gases chloride anion test challenges met with understanding caco3 (aq) + 2 hno3 (aq) → during the chloride anion test, there was difficulty in identifying if there was an unknown substance for chloride turned out positive for both the positive test, negative test, and unknown compound.