Galvanic - Work Done

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duketh10
Posts: 31
Joined: Fri Sep 29, 2023 10:07 am

Galvanic - Work Done

Postby duketh10 » Mon Mar 18, 2024 2:09 am

A Zn | Zn2+ || Co2+ | Co galvanic cell is constructed in which the standard cell potential is 0.48V. Calculate the free energy change at 25C per gram of zinc last at the anode, if all concentrations remain at their standard value of 1 M throughout the process. What is the maximum electrical work done by the cell on its surroundings during this experiment.
Hi! I need some help on how to do this problem, specifically how would I start/what equation would I use?

Isabelle Huerta 2I
Posts: 81
Joined: Fri Sep 29, 2023 12:15 pm

Re: Galvanic - Work Done

Postby Isabelle Huerta 2I » Mon Mar 18, 2024 3:43 am

Hi! For this problem you can use the relationship between Eº cell and ∆Gº with the equation ∆Gº = -nF Eº cell (n = num of moles transferred, F = Faraday constant). First you'd calculate the num of moles of electrons being transferred using stoichiometry and the balanced equation. Then, with the given standard cell potential, find ∆Gº. The last thing you'd do is calculate the max electrical work done by using the equation w = -∆Gº.


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