Hazard Code CSomewhat hazardous The hazard information reference is Flinn

Hazard code csomewhat hazardous the hazard

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It deserves the instructor’s special handling and storage attention. Hazard Code: C—Somewhat hazardous. The hazard information reference is: Flinn Scientific, Inc., Chemical and Biological Catalog Reference Manual, P.O. Box 219, Batavia, IL 60510, (800) 452-1261, SAMPLE DATA TABLE Trial 1 Trial 2 Trial 3 Volume of 0.3% H 2 O 2 solution (mL) 10.00 10.20 10.10 Volume of 0.02 M MnO 4 solution used (mL) 20.10 20.40 20.20 Calculated number of moles of H 2 O 2 1 × 10 3 from Pre-Lab Q5 1 × 10 3 from Pre-Lab Q5 1 × 10 3 from Pre-Lab Q5 Answers to PRE-LAB QUESTIONS 1.Write the oxidation and reduction half-reactions for the redox reaction taking place in this laboratory. 2 O e 2.Identify the oxidizing agent for this reaction. Justify your answer. 3.How many moles of electrons are transferred in the balanced redox reaction? Justify your answer. 8 H 2 O 10 e O ( l ) Adapted from Advanced Chemistry with Vernier & Laboratory Experiments for Advanced Placement Chemistry by Sally Ann Vonderbrink, Ph. D.
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Determination of Concentration by Oxidation-Reduction Titration 4.Calculate the number of moles of MnO4in 20.1 mL of 0.020 M potassium permanganate solution. 4 5.Calculate the number of moles of hydrogen peroxide needed to react with 20.5 mL of 0.020 Mpotassium permanganate solution. ) 2 −4 2. 6.The introduction states that the hydrogen peroxide solution sold in grocery stores is 3% (by mass). Assuming a density of 1.0 g/mL, calculate the molarity and mole fraction of 3.0 % H2O2. 2 Answers to POST-LAB QUESTIONS AND DATA ANALYSIS 1.Calculate the moles of MnO4used to reach the equivalence point of the reaction for eachtrial. Adapted from Advanced Chemistry with Vernier & Laboratory Experiments for Advanced Placement Chemistry by Sally Ann Vonderbrink, Ph. D.
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Determination of Concentration by Oxidation-Reduction Titration
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