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 25OC as follows: Zn | Zn2+(0.10 M) || Cu2+ (2.5 M) | Cu The mass of each solid electrode is 2.00 g. a) Which of the two is a reducing agent? b) Calculate the cell potential when this battery is first connected. c) 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.)
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 25OC as follows: Zn | Zn2+(0.10 M) || Cu2+ (2.5 M) | Cu The mass of each solid electrode is 2.00 g. a) Which of the two is a reducing agent? b) Calculate the cell potential when this battery is first connected. c) 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.)
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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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 25OC as follows:
Zn | Zn2+(0.10 M) || Cu2+ (2.5 M) | Cu
The mass of each solid electrode is 2.00 g.
a) Which of the two is a reducing agent?
b) Calculate the cell potential when this battery is first connected.
c) 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) Calculate the mass of each electrode after 10.0 hours.
e) What will cause the battery to die after some time?
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