Lab 13 - Redox Reactions

Lab procedure please print the worksheet for this lab

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Unformatted text preview: sign prelab are required to bring and hand in the prelab worksheet. Lab Procedure Please print the worksheet for this lab. You will need this sheet to record your data. For this lab, Part A will be set up at your lab station. During the lab period, each pair should take turns going to the side shelf to record measurements for Part B. Part A1: Ranking Oxidizing Agents www.webassig n.net/ebooks/wsug encheml1/lab_13/manual.html 6/10 4/15/13 Lab 13 - Redox Reactions 1 Obtain a ceramic well plate. 2 Add 3 drops of Cu(NO3)2 solution to the first well, 3 drops of Mg(NO3)2 solution to the second well, and 3 drops of KMnO4 solution to the third well. 3 Add 2 drops of H2O2 solution to each well. If something happened, write "R" (reaction) in Data Table A1 and make a brief note of what occurred in the space below it. If nothing happened, write "NR" (no reaction) in the space. Any oxidizing agent that reacted with the H2O2 is a stronger oxidizing agent than any which did not. 4 If no reaction was observed, place three drops of the oxidizing agent in another well. 5 Add three drops of KI solution to each well. If something happened, write "R" (reaction) in Data Table A1 and make a brief note of what occurred in the space below it. If nothing happened, write "NR" (no reaction) in the space. Any oxidizing agent that reacted with the KI is a stronger oxidizing agent than any which did not. 6 Pour the contents of the well plate into the waste bottle for oxidizing agents and rinse it with your squirt bottle. The rinsings should also go into the waste bottle. Pour the contents of the well plate into the waste bottle for oxidizing agents and rinse it with your squirt bottle. The rinsings should also go into the waste bottle. Table A: Reactions of Oxidizing Agents Que s tion 1: List the oxidizing agents in order, from weakest to strongest. Que s tion 2: Write half- reactions for the oxidizing agents in order, from weakest to strongest. (Hint : Remember that oxidizing agents get reduced.) Part A2: Ranking Reducing Agents 1 Obtain three 30 mL beakers and label them Cu, Mg, and Zn. 2 Add 10 - 15 mL of tap water to each, then place a small piece of copper metal in the one labeled "Cu", magnesium metal to the one lab...
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This document was uploaded on 01/22/2014.

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