HW2 Key - Name: _Key_ Lab TA Name_ Lab Section (Day, am/pm)...

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Name: ____________ Key _____________________________________________ Lab TA Name_______________________________________________________ Lab Section (Day, am/pm) _________________________________________ Written Homework 2: Must be turned in by inserting into the proper box outside of Baker 131 before 2 pm on Friday September 24, 2010. Show all work on this page or on the back side if necessary. Carefully and neatly show the progression of the logic, formulas and math that you use. On an exam you should be able to do the problem in 20 minutes or less. 1. 0.7524 g of oxalic acid (H 2 C 2 O 4 ) is dissolved in about 300 ml of 0.5M H 2 SO 4 . A solution of potassium permanganate (KMnO 4 ) is dark purple. When that solution is slowly added to oxalic acid the purple color disappears, because the products given below are essentially colorless. H 2 C 2 O 4 (aq) + MnO 4 - (aq) Æ CO 2 (g) + Mn +2 (aq) a. ( 14 points) Balance the above redox equation (then go to part b on the next page. If necessary indicate that you have used the back side of the page to complete part a.) Half Reactions:
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This note was uploaded on 04/06/2011 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell University (Engineering School).

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HW2 Key - Name: _Key_ Lab TA Name_ Lab Section (Day, am/pm)...

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