Chem1BExam4SampleTest

Chem1BExam4SampleTest - Chem 1B Exam 4 Sample Questions...

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Chem 1B Exam 4 Sample Questions Instructions: For all mathematical problems, show your work. Give the basic formula (if there is one), rearrange it if necessary, plug in data with units, round properly to the correct number of significant figures, and place a box around the answer. For essay questions, be complete, but concise. Complete sentences with proper spelling and punctuation are expected. Useful information: R = 0.0083145 kJ mol . K ; 1 F = 96,485 C mol e - = 96,485 J V . mol e - ; 0.0592 V c = 2.9979 × 10 8 m/s, 1 amu = 1.660540 × 10 -27 kg 1. Given the following half-reactions: MnO 4 1- (aq) + 8H 1+ (aq) + 5e 1- Mn 2+ (aq) + 4H 2 O( l ) E° = 1.52 V IO 4 1- (aq) + 2H 1+ (aq) + 2e 1- IO 3 1- (aq) + H 2 O( l ) E° = 1.60 V (a) (8 pts.) Write the balanced equation for the galvanic cell based on these half-reactions. - (b) (3 pts.) What is E° for the overall reaction? 2.
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Chem1BExam4SampleTest - Chem 1B Exam 4 Sample Questions...

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