Fall 05. Exam2

Fall 05. Exam2 - Chemistry 2101 Midterm #2 Name: _ Student...

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Chemistry 2101 Midterm #2 Nov. 9, 2005 Name: ________________________________ Student #: _____________________________ 1. _________ / 4 2. _________ / 6 3. _________ / 4 4. _________ / 6 5. _________ / 6 6. _________ / 4 Total : _________ / 30 Page 1 of 8
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1) (4 points) 10.32 mL of 0.0117 M KMnO 4 is added to a 25.00 mL aliquot of an oxalic acid solution to reach the end point. What is the concentration of the oxalic acid? 5 C 2 H 2 O 4 + 2MnO 4 - + 6H + Æ 10CO 2 + 2Mn 2+ + 8 H 2 O (oxalic acid)
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2) (6 points) What is the full cell potential for the galvanic cell shown below? The temperature is 25 0 C. AgCl + e - Æ Ag (s) + Cl - E 0 = 0.222V Cd 2+ + 2e - Æ Cd (s) E 0 = -0.402V Page 3 of 8
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3) (4 points) a) A half cell gives a cell potential of –0.117 V with respect to a Ag/AgCl reference electrode (E = +0.197). What would the full cell potential be if this half cell was connected to a standard hydrogen electrode?
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This note was uploaded on 10/02/2011 for the course CHEM 2101 taught by Professor Bulman during the Spring '11 term at Minnesota.

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Fall 05. Exam2 - Chemistry 2101 Midterm #2 Name: _ Student...

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