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20. Due to COVID-19 coupled with erratic power supply from ZESCO, you decide to play around with galvanic cells and you construct a zinc-copper battery operating at a zero resistant small light emitting diode (L.E.D) at 25°C as follows: Zn | Zn"(0.10 M) || Cu² (2.5 M) | Cu

20. Due to COVID-19 coupled with erratic power supply from ZESCO, you decide to play around with galvanic cells and you construct a zinc-copper battery operating at a zero resistant small light emitting diode (L.E.D) at 25°C as follows: Zn | Zn"(0.10 M) || Cu² (2.5 M) | Cu

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 92QRT
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20. Due to COVID-19 coupled with erratic power supply from ZESCO, you decide to play around with galvanic cells and you construct a zinc-copper battery operating at a zero resistant small light emitting diode (L.E.D) at 25°C as follows: Zn | Zn²*(0.10 M) || Cu2* (2.5 M) | Cu The mass of each solid electrode is 2.00 g. a) b) c) Which of the two is a reducing agent? Calculate the cell potential when this battery is first connected. Calculate the cell potential after 10.0 A of current has flowed for 10.0 hours. (Assume each half-cell contains 1.00 L of solution.) d) e) Calculate the mass of each electrode after 10.0 hourS. What will cause the battery to die after some time? o search hp f7 f8 f9 f10 f11 f12 f3 米 f4 IOI f5 C f6 www 73 1 & 7 7 8. $ 2 3 5 8 € 6 E R T Y U P S D F G K V B 88 TECNO SPARK at gr 00 堂
Transcribed Image Text:20. Due to COVID-19 coupled with erratic power supply from ZESCO, you decide to play around with galvanic cells and you construct a zinc-copper battery operating at a zero resistant small light emitting diode (L.E.D) at 25°C as follows: Zn | Zn²*(0.10 M) || Cu2* (2.5 M) | Cu The mass of each solid electrode is 2.00 g. a) b) c) Which of the two is a reducing agent? Calculate the cell potential when this battery is first connected. Calculate the cell potential after 10.0 A of current has flowed for 10.0 hours. (Assume each half-cell contains 1.00 L of solution.) d) e) Calculate the mass of each electrode after 10.0 hourS. What will cause the battery to die after some time? o search hp f7 f8 f9 f10 f11 f12 f3 米 f4 IOI f5 C f6 www 73 1 & 7 7 8. $ 2 3 5 8 € 6 E R T Y U P S D F G K V B 88 TECNO SPARK at gr 00 堂
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