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homework_5 - Grodin Micah Homework 5 Due 11:00 pm Inst Sara...

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Grodin, Micah – Homework 5 – Due: Feb 28 2006, 11:00 pm – Inst: Sara Sutcliffe 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. Q10: VOLTAIC also means GALVANIC. Use Fig 8.4 to help you. 001 (part 1 of 1) 10 points Chemical energy is converted directly into electrical energy in 1. a battery. 2. an electrolytic cell. 3. an automobile’s engine. 4. an electrical power plant. 002 (part 1 of 1) 10 points You’re asked to build a simple battery. Which is NOT a necessary component or process? 1. oxidation-reduction reaction (redox) 2. external energy source 3. metal electrodes 4. All are necessary. 5. electrolytes 003 (part 1 of 1) 10 points During the chemical reaction in an electro- chemical cell, 1. oxidation occurs at the anode. 2. electrons travel from the cathode to the anode. 3. oxidation may take place without reduc- tion. 4. a substance is oxidized and gains control over electrons. 004 (part 1 of 1) 10 points Zinc Silver 1 . 56 V V Voltmeter e - e - 1 M Zn 2+ (aq) 1 M Ag + (aq) Salt bridge to carry ions Zn(s) + 2 Ag + (aq) Zn 2+ (aq) + 2 Ag(s) In this electrochemical cell, what is the cathode?
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