Be sure that it includes the ion being tested and a description of a positive test for each ion. For the following pairs of ions, write the formula of the compound that you would expect them to form: a. barium and hydroxide b. cobalt(III) and phosphate c. iron(II) and sulfate d. silver and hydrogen carbonate 3. Once the colored compound is identified we know what the, (think about it – can you see it in the above. Your mission is to determine which compound is, Ionic compounds are made of cations and anions. The particles that compose an ionic compound (ions) are held together by ionic bonds. Identification of Ionic Compounds Report.doc - Lab Report Name Identification of Ionic Compounds Partner's Name Date Construct your own data table below, Be sure that it includes the ion being tested and a. description of a positive test for each ion. Most of them are water soluble. In chemical terms, salts are ionic compounds composed of cations (positively charged ions) and anions (negatively charged ions). Determine cation present in compound based upon a flame test. You can predict if a precipitate will form when two ionic solutions are mixed by looking at all the new, possible combinations of cations and anions and identifying if any produce insoluble compounds. For a limited time, find answers and explanations to over 1.2 million textbook exercises for FREE! CHEM 111 Lab 2 Bunsen Burner and Graphing Data f20.docx, Lab 3 CHEM 111 Lab Naming Compounds and Writing Formulas.docx, CHE 111 Lab Line Spectra of Atoms f117.docx, edited_exp_10_precipitation_reactions__metathesis_reactions_.pdf, chap 4 with soln stoichiometry from chap 3 rev spring 2020 4x4 pdf.pdf, 100147451-Solution-Manual-Chemistry-4th-Ed-McMurry, Queen Mary, University of London • CHE 102. Milky/white. 4) observe the color of the solution. Even a small amount of ions in a water solution makes it able to conduct electricity. Background: Ionic compounds are made of cations and anions. Cloud bunched together, Paper turned blue where gas from test tube came in contact. This preview shows page 1 - 2 out of 2 pages. In solution, these ions essentially cancel each other out so that the solution is electrically neutral (without a net charge). Some of precipitates that form when your unknown solutions react with each other are: Silver iodide AgI – light yellow with “dirty gray”, (due to inevitably present AgCl impurities), Silver chloride AgCl – white, turning violet after ~ 10min. 2)add a small amount of the compound to the test tube and let the solution dissolve. The lab also allows students to determine the solubility of ionic compounds and molecular compounds in … 3)add 3 drops of universal detector to the solution and gently shake the test tube. If you mix NaCl and AgNO3, the new possible combinations are NaNO3 and AgCl. Some of these precipitates have color and can be easily identified. Didn’t react very obviously, looks grey and murky. You will be given a set of 5 bottles with the following ionic compounds: - but you don’t know which is in which bottle. Yellow liquid, separated solid at bottom of test tube, Bubbles as soon as solution is added—clear and bubbly, This textbook can be purchased at www.amazon.com. 5)repeat steps 1-4 for until all substances have been used. Objective: Identification of ionic compound is present in “unknown” bottles. Course Hero is not sponsored or endorsed by any college or university. … unknown as well as a description of the results of the tests run on your unknown. Lab Report Name: _____ Identification of Ionic Compounds Partner's Name: _____ Date: _____ Construct your own data table below. Not swirly, completely mixed together. Most of them are water soluble and are colorless. However, when two colorless, water soluble compounds are mixed together, sometimes a precipitate forms if the product of the exchange reaction is insoluble. It should also include the identifying code for your unknown as well as a description of the results of the tests run on your unknown. Classify unknown compound based on physical characteristics of said compound. 1)add 5ml of water to the test tube. It was found that the compound had no smell, was soluble in water, and not soluble in toluene and acetone. Turned cloudy/swirly—did not completely mix. Run anion tests to determine present anion (carbonate, sulfate, nitrate, acetate, chloride… and are colorless. However, when two colorless, water soluble compounds are mixed together, sometimes a precipitate forms if the product of the exchange reaction is. Objective: Determine the general properties of ionic compounds and compare those properties to the properties of a covalent compound… of both ionic and molecular compounds in solution and requires that the student interpret results to make a determination about the type of compound they are working with. CHEM 111 6 Lab Identification of Unknown Ionic Solutions Online.docx - CHEM 111 Lab Identification of Unknown Ionic Compounds K Gorzelska revised Oct, CHEM 111 Lab: Identification of Unknown Ionic Compounds, Name: ___________________ Name _________________. these precipitates have color and can be easily identified. Course Hero is not sponsored or endorsed by any college or university.
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