UNC-Chapel Hill CHEM 101 - Experiment 5: Gas-Forming Reactions and Rockets

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Template Instructions: Remove and replace any yellow-highlighted text. Please do not resize, remove, or add answer boxes.Experiment 5: Gas-Forming Reactionsand RocketsIn-Lab Notebook (Results and Observations)TA ONLY (Grade Last): Formatting Late PenaltyName Jamoni CollinsLabPartner(s)Jordan Han, John Parrish, Brianna PetersonONYEN jjamoni(2 pt penalty ifmissing)Jinjo, Briabri,rand1209Template Instructions: Remove and replace any yellow-highlighted text. Please do not resize, remove, or add answer boxes.Experiment 5: Gas-Forming Reactionsand RocketsIn-Lab Notebook (Results and Observations) During the lab period, use the answer boxes and fillable tables below to record your measurements, calculated values, and general observations. Entering data directly into Microsoft Excel is helpful and encouraged but please also enter data directly into the tables here as well. Include a title for each tableand units for each table entry, as appropriate. See notes and examples below.Note on Table Titles: The ACS states that each table must include a one phrase (or sentence) title that describes the contents of the table. The title should be understandable without reference to the textor, in this case, the lab manual.11: https://pubs.acs.org/doi/full/10.1021/acsguide.40303Example of a Table Title: “Rate constants for substitution reaction A as a function of temperature.”Note on Units for Table Entries: For each entry in a table, units should be included, either in the column header or in a separate column (similar to how units are treated in Excel), unless the quantity isactually unitless. Insert units in the column headers of the tables below where appropriate.Note on Observations: Using the answer boxes below, make note of observations as they occur during the experiment. One to two sentences are sufficient for any major steps, e.g., “the volume increased noticeably when…”. In general, observations should not include measurements (i.e., numbers).1CHEM 101L In-Lab Assignment: Experiment 5 Spring 2022Table 1. Mass and Volume of production of Oxygen and Hydrogen Production of Oxygen Production of HydrogenAmountsMass of Yeast(g)Volume of3% H2O2 (mL)Mass of MossyZinc (g)Volume of6M HCl (mL)Initial.501 20.00 0.730 40.001st additionalquantity.5410 10.00 0.429 Text2nd additionalquantityText Text Text Text3rd additionalquantityText Text Text TextObservations: All The reaction between the yeast and 3% hydrogen peroxide created a lot of bubbles, cloudy appearance, and foam near the top of the test tube. I noticed that having shorter spout on the bulb caused problems with collecting the gas instead of just the water falling out. From the data you can see that adding H_2 first before O_2 caused the distance to be longer. Bubbles also formed when Zincwas added to the 6M HCL. Adding H_2 first also affect the loudness of that was produced when the rocket was launched. From our data adding H_2 first and having a 1:1 ratio was the best trial we produced. A mistake we made early on was not getting enough of the foam out the test tube with the yeast as the foam started to move up into the tubing making it hard to get the oxygen gas into our bulbcausing a fail trial attempt. 2CHEM 101L In-Lab Assignment: Experiment 5 Spring 2022Table 2. Hypothesis being tested with different trials Hypothesis Category (e.g., amount of H2,order of gas collection, O2:H2 ratio)TrialHypothesis 1 2:1 ratio of H_2 to O_2 will reslut in the greatest propulsion 1,2Hypothesis 2Adding hydrogen gas first before oxygen gas will result in greater propulsion3,4Table 3. Combustion reaction between Hydrogen and Oxygen gas tesing hypothesis Trial#1st GasCollected(H2 or O2)Amountof O2(notches)Amountof H2(notches)O2:H2ratioDistanceFlown(ft)Observations (e.g.,loudness of ignition, etc.)1 H_2 2 4 1:2 18.3 Loud (like a snap)2 H_2 4 2 2:1 18.4 Pretty loud3 H_2 3 3 1:1 21.3 Loudest; longest distance4 O_2 3 3 1:1 10.8 Not as loud;smokyTA ONLY (Grade Last): Formatting Late


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