Preview

Lab: Preparation of Zinc Iodide

Good Essays
Open Document
Open Document
945 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Lab: Preparation of Zinc Iodide
Trisheena Harricharran 4/1/13
Miguel Perez Chem 106 Sec 006
Observations
Materials: * Barium Iodide- White and powdery * Zinc Sulfate- White and powdery * Boiling Chips- Tiny, grey and rock like
Experimental Observations:
Barium Iodide used- .63g
Zinc Sulfate used- .45g
Boling Tube with 2 boiling chips- 41.52g
Barium Iodide in solution with 2 mL of deionized water looks cloudy. Zinc Sulfate in solution with 2 mL of deionized water is clear. Barium Iodide solution mixed with Zinc Sulfate solution turns milky white. After first centrifugation, solution separates into Barium Sulfate precipitate and Zinc Iodide supernatant. Supernatant is decanted into boiling tube. After second centrifugation we are left with more precipitate and a little more supernatant. Supernatant is poured off again and precipitate is washed again with another 1 mL of deionized water. After third centrifugation very little supernatant is left. We add the supernatant to the boiling tube. The Barium Sulfate waste product is disposed of properly in the waste beaker. We heat our boiling tube in the Bunsen burner and we are left with a small amount of white powdery Zinc Iodide. Mass of test tube with zinc iodide- 42g.
We made a total of .48g of zinc iodide.

Trisheena Harricharran 4/1/13
Miguel Perez Chem 106 Sec 006
Tabulated and Graphical Results
Complete Graph of all Tests in Lab Group # | % Yield | | 1 | 96.20% | Misbah Haque, Mellinie Alacron | 2 | 104.63% | Glenia Israel, Angie Li | 3 | 98.40% | Vasadeo, Waleed, Kathyrine | 4 | 92.20% | Andrea, Anna | 5 | 104.50% | Justin, Daphne | 6 | 92.41% | Eden, Bobby | 7 | 81.70% | Evelisse, Ammy | 8 | 104.80% | Neel Desai, Miguel Perez | 9 | 106.30% | Jing Leong, Suzanna Uddin | 10 | 97.73% | Navpreet Kaur, Laura Decean |

Mass of test tube with 2 boiling chips is 41.52g.
Mass of test tube with zinc iodide product is 42g.
Mass of zinc iodide made during
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    6.03 Calorimetry Lab
    • 529 Words
    • 3 Pages

    6.03 Calorimetry Lab

    The solution of NaOH, water and HCl in the 100-mL was poured into the proper waste container. The solution of 40-mL of water and 5-mL of HCl was prepared again in the same 100-mL beaker and placed under the…

    • 529 Words
    • 3 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Zinc Acetate Dehydrate Analysis
    • 280 Words
    • 2 Pages

    Zinc Acetate Dehydrate Analysis

    Undoped and Ce doped ZnO thin films were prepared by the sol-gel process. Zinc acetate dehydrate was dissolved in a mixture of absolute ethanol and monoethanolamine (MEA) yielding to a precursor concentration of 0.4 M .The MEA to zinc acetate molar ratio was set to 1. For doped films, cerium nitrate was added to the mixture with an atomic percentage fixed at 0.1, 0.3, 0.5, 0.7, and 0.9 at.% Ce, respectively.…

    • 280 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    Redox Area Lab Report
    • 741 Words
    • 3 Pages

    Redox Area Lab Report

    Zinc and HCl: Interaction between Zinc and HCl caused the once clear HCl to become white in color. Visible bubble can be observed around the Zinc metal.…

    • 741 Words
    • 3 Pages
    Better Essays
    Read More
  • Good Essays

    Taking the a Train Lab Report
    • 649 Words
    • 3 Pages

    Taking the a Train Lab Report

    1. Introduction: This lab focused on showing the reaction that takes place between zinc and iodine using only deionized water instead of acetic acid (or vinegar) as we did in the previous lab by adding acetic acid to zinc iodide. The purpose of this lab was to see how water created the reaction and another compound or precipitate.…

    • 649 Words
    • 3 Pages
    Good Essays
    Read More
  • Powerful Essays

    Audit Case ch 6
    • 1999 Words
    • 13 Pages

    Audit Case ch 6

    The objectives include: an audit of KCN's financial statements for the year ended 12/31/20X5 and to issue a letter of compliance with covenants of the client's letter of credit agreement.…

    • 1999 Words
    • 13 Pages
    Powerful Essays
    Read More
  • Powerful Essays

    Mat 540 Assignment 1
    • 1196 Words
    • 5 Pages

    Mat 540 Assignment 1

    This causes the shape of the box plot to be quite spread out with the median and quartiles close together. The female writing hand box plot is also the same length as the writing hand box plot; this is because the minimum and maximum data from the writing hand came from females. When putting the male and female writing hand box plots in comparison to each other, you can see that females have a much larger range than the males as discussed before. This causes the female box plot to have a lower, lower quartile and median and a higher upper quartile. The median for males is only slightly higher than the median for females, keeping in mind that males had data from an eleven (11) year old and females had data from a forty two (42) year old. This can cause the data to be slightly swayed as there were not equal age groups for both box…

    • 1196 Words
    • 5 Pages
    Powerful Essays
    Read More
  • Good Essays

    Dr. Talmage
    • 488 Words
    • 2 Pages

    Dr. Talmage

    Procedure: In this lab we mixed many different substances to see if they formed a double replacement reaction. We also looked for precipitants that were formed from the mixing of the different substances. We used barium nitrate, potassium hydroxide, sodium sulfate, magnesium nitrate, aluminum sulfate, and iron (III) chloride in set one. In set two we used potassium chloride, sodium hydroxide, magnesium nitrate, barium chloride, sodium sulfate, and magnesium sulfate. For each set, we mixed two drops of one compound in five wells of a spot plate. We then added two drops of all the other substances to the compound. We repeated this procedure for set two. If a precipitant formed from any solution, we recorded the color on our data table. If no precipitant formed, we recorded NR. After mixing and recording all the compounds we rinsed to spot plate thoroughly with water.…

    • 488 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Lab report
    • 708 Words
    • 3 Pages

    Lab report

    Starting out the experiment, HCl was added to the solution in the test-tube in order to form a reaction between the HCl, Ag, Pb, and Hg cations. The products of this addition of HCl were PbCl2, AgCl, and Hg2Cl2. After the HCl was added, the solution turned a milky white color. It was important to not add too much HCl because excess HCl would have caused an aqueous complex of PbCl2 and AgCl to form instead of the desired solid PbCl2. The mixture was then centrifuged in order to let the solid particles of the three ions to fall to the bottom. Another drop of HCl was added to test if the reaction had been completed. If the solution were to turn milky white again then it would’ve signaled an incomplete reaction between the cations and HCl. The next objective was to separate the lead(II) ion from the mixture. The test tube with all three solids precipitated at the bottom was heated, which allowed the PbCl2 to dissolve. The supernatant fluid containing the Pb(II) ions was then separated from the solid mercury(I) ions and solid silver ions decanting, adding a drop of acetic acid to the supernatant fluid, and also adding two drops of K2CrO4 to the test tube. A milky yellow mixture was observed as this indicated the presence of the lead (II) ion. This insoluble yellow precipitate was the insoluble compound of PbCrO4. In part 2 of the experiment, after the supernatant…

    • 708 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Are Deodorants Contain Different Amounts Of Aluminum?
    • 651 Words
    • 3 Pages

    Are Deodorants Contain Different Amounts Of Aluminum?

    Preparing the zinc sulphate (ZnSO4) solution by dissolving the solid form of ZnSO4 in 250ml of distilled water.…

    • 651 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Zinc Research Paper
    • 493 Words
    • 2 Pages

    Zinc Research Paper

    Zinc is a lustrous bluish-white metal. It is brittle and crystalline at ordinary temperatures but it becomes ductile and malleable when heated between 110°C and 150°C. It is a reactive metal that can combine with oxygen and other non-metals and will react with dilute acids to release hydrogen.…

    • 493 Words
    • 2 Pages
    Good Essays
    Read More
  • Powerful Essays

    Preparation of Tin Tetraiodide
    • 789 Words
    • 4 Pages

    Preparation of Tin Tetraiodide

    and to measure the melting point of tin tetraiodide. Tin tetraiodide was recrystallized after the synthesis. The percent yield and the theoretical yield of tin tetraiodide were calculated. Recrystallization is to further improve the purity of tin tetraiodide. The solvent is carefully chosen to be toluene in order to maximize the recovery of tin tetraiodide during recrystallization.…

    • 789 Words
    • 4 Pages
    Powerful Essays
    Read More
  • Good Essays

    Zinc Chloride Synthesis Lab Report
    • 718 Words
    • 3 Pages

    Zinc Chloride Synthesis Lab Report

    “The Synthesis of Zinc Chloride”, what a peculiar name for a lab that does not even involve synthesis. Synthesis, by definition, is when two elements are combined in a chemical reaction,but that is not the case. In this lab we are combining zinc, an element, and hydrochloric acid, a compound, but combining a compound and an element is not synthesis, it is single replacement. We are taking zinc and hydrochloric acid and making zinc chloride and hydrogen, a single replacement, but what occurred during that replacement?…

    • 718 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Empirical Formula of Zinc Iodide
    • 1849 Words
    • 8 Pages

    Empirical Formula of Zinc Iodide

    Synthesis and the determination of empirical formulas are two extremely important parts of chemistry. In this experiment, you will synthesize zinc iodide and determine its empirical formula. The molecular formula gives the actual number of atoms of each element in the molecule and the empirical formula gives the lowest whole number ratio of the atoms in the molecule. For instance, the molecular formula of glucose is C6H12O6 and its empirical formula is CH2O. For some molecules such as water, the empirical and molecular formulas are the same. One of the common techniques used to help determine the identity of a substance involves combustion of very small amounts of the substance. By measuring the amounts of water, carbon dioxide, and other gases produced, it is possible to determine the percentage by mass of each element in the compound. From the percentages, it is possible to calculate the empirical formula of the compound. Suppose, for example, that the combustion experiment for a compound that contains carbon, hydrogen, and oxygen gives the compositions as 40.00% carbon, 6.71% hydrogen, and 53.29% oxygen by mass. The goal is to convert mass percentages to mole or atom ratios. Whenever dealing with percentages in a calculation of this type, one of the easiest ways to proceed is to assume that you have 100 g of the substance. Thus 100 g of the substance contains 40.00 g of carbon, 6.71 g of hydrogen and 53.29 g of oxygen. As is common for many chemical calculations, the calculation of the number of moles is one of the first steps. Thinking ahead, once the number of moles is known, the ratio of moles is easily calculated.…

    • 1849 Words
    • 8 Pages
    Good Essays
    Read More
  • Good Essays

    Zinc Oxide Synthesis Lab Report
    • 149 Words
    • 1 Page

    Zinc Oxide Synthesis Lab Report

    Typically, the zinc oxide is synthesized by several methods (ref); out of these the co-precipitation reaction is one of simple method. Addition of aqueous alkaline solution of sodium hydroxide to the zinc salt solution forms whitish gelatinous precipitate of zinc hydroxide; on dehydration it gets converts to zinc oxide. The mentioned process of synthesis for zinc oxide, we have been modified in such way that, the zinc Oxide –silica -silver composite was synthesized in one pot-one step reaction. In present work we have replaced sodium hydroxide with alkaline solution of sodium silicate. On addition of alkaline solution of sodium silicate to metal salt solution, the alkaline nature of solution converts the Zinc to zinc oxide, at same…

    • 149 Words
    • 1 Page
    Good Essays
    Read More
  • Good Essays

    3 Investigation of Action of Saliva and Hydrochloric Acid in Two Carbohydrate Solution
    • 1653 Words
    • 7 Pages

    3 Investigation of Action of Saliva and Hydrochloric Acid in Two Carbohydrate Solution

    1. Two boiling tubes containing 1 ml solution A and 1 ml solution B respectively are prepared. 1ml Benedict’s solution is added to each test tube. Both test tube are heated together in the water bath for two minutes. The result is recorded in Table 1.…

    • 1653 Words
    • 7 Pages
    Good Essays
    Read More

Related Topics