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 250C as follows: Zn | Zn (0.10 M) Cu (2.5 M) | Cu The mass of each solid electrode is 2.00 g. 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 cach half-cell contains 1.00 L of solution.) a) b) c)
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 250C as follows: Zn | Zn (0.10 M) Cu (2.5 M) | Cu The mass of each solid electrode is 2.00 g. 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 cach half-cell contains 1.00 L of solution.) a) b) c)
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 | Zn (0.10 M) Cu (2.5 M) | Cu
The mass of each solid electrode is 2.00 g.
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 1,00L of solution.)
a)
b)
c)
Calculate the mass of each electrode after 10.0 hours.
What will cause the battery to die after some time?
e)
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