Chem144_Stoichiometry2_Report

Chem144_Stoichiometry2_Report - NAME: STUDENT ID: QUIZ...

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NAME: QUIZ SECTION: STUDENT ID: LAB PARTNER: Grading: 55 pts for this template, 5 pts for notebook pages Notebook pages: Purpose/Method section complete? Are they organized and legible? Have you plotted your data as instructed? DATA, CALCULATIONS AND GRAPHS Part I: R Concentration of stock solutions 2 pts Bleach, NaOCl(aq) 6.0 %m/m NaOCl 3.0 Mass of 0.500 mL Bleach, g Density of Bleach, g/ml .540 g 1.08 g/mL .529 g 1.06 g/mL .530 g 1.06 g/mL .547 g 1.09 g/mL Average Density, g/mL 1.07 g/mL Hydrogen Peroxide, H 2 O 2 (aq) % m/m H 2 O 2 EXPERIMENT 1: STOICHIOMETRY I. REACTION OF HYDROGEN PEROXIDE AND BLEACH II. REACTION OF IRON (II) WITH 1,10 PHENANTHROLINE Your values for mass and density should have 3 sig figs. By signing below, you certify that you have not falsified data, that you have not plagiarized any part of this lab report, and that all calculations and responses other than the reporting of raw data are your own independent work. Failure to sign this declaration will cost you 5 points. Signature: Note: ALL sections of this report MUST be typed. With this and all future Excel-based reports, make sure that the report prints correctly (graphs, tables, and text boxes are not split across page breaks) before you turn it in. If you print it and it doesn't look okay, then use the tools in Excel to adjust the page breaks. Purpose and Method Things to think about: What is the goal of this experiment? Explain how it is accomplished. What is the general method (not step by step detailed procedure) that you will be using to achieve this goal? How will you process the data that you record in lab? (What calculations will you use and how do you obtain all of the values to plug into those equations? Part I (3 pts) The goal of this experiment is to determine the stoichiometry between hydrogen peroxide and bleach by keeping the mole of bleach constant and changing the mole of hydrogen peroxide. This will help determine the amount of moles of hydrogen peroxide and moles of bleach to have the reaction completely finish so that there won't have any extra or not enough of a reagent. First set up the graduated cylinder with water inverted in the water trough with the ring stand and arm clamp holding it together. Then put 4 ml of bleach into the flask with different mass of hydrogen peroxide in the vial put straight up in the flask and cap the flask with the rubber stopper and rubber tubing connecting the flask with the graduated cylinder so it could collect the oxygen gas. Next, shake the flask so the vial tip over and let the two
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This note was uploaded on 02/08/2011 for the course CHEM 144 taught by Professor Robinson during the Fall '10 term at University of Washington.

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Chem144_Stoichiometry2_Report - NAME: STUDENT ID: QUIZ...

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