The Nernst Equation- I apologize in advance for my ignorance

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SUMMARY

The discussion centers on the Nernst Equation, specifically the formula Ecell = E0cell - (RT/nF)lnQ, as applied to a copper-aluminum electrochemical cell. The user seeks clarification on several components, including the meaning of E0, the number of electrons exchanged (n), the role of pH in the equation, and the calculation of the reaction quotient (Q). Key points include the importance of understanding the gas constant (R), temperature in Kelvin, and how to derive Q from the concentrations of reactants and products. The user expresses a need for simplified explanations and practical examples to grasp these concepts.

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  • Understanding of electrochemical cells and their components
  • Familiarity with the Nernst Equation and its variables
  • Basic knowledge of logarithmic functions and their applications in chemistry
  • Concept of reaction quotient (Q) in chemical reactions
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  • Study the derivation and applications of the Nernst Equation in electrochemistry
  • Learn how to calculate the reaction quotient (Q) for various electrochemical reactions
  • Explore the impact of pH on electrochemical cell potential and its incorporation into the Nernst Equation
  • Review the concept of moles and how to determine the number of electrons exchanged in redox reactions
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Students in secondary education, chemistry enthusiasts, and anyone seeking to understand electrochemical cells and the Nernst Equation in practical applications.

Aisling25
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Ecell = E0cell - (RT/nF)lnQ
So I understand the Nernst Equation, but I don't have some info. (Please bare with me, I'm in secondary)
I'm doing a Cu - Al cell. My E cell is negative (-1.33). Does this have an affect on the equation?
What exactly does E0 stand for? I understand how to find E cell, but do I square it by something? I can't find online how many electrons are swapped. How many electrons are swapped?
How do you factor in the pH? I've calculated the pH and the number of ions in it, but where do i add this in on the equation? Please lay it out how you would in the equation so I can see
I'm stuck on R (gas constant, which is 8.31 (volt-coulomb)/(mol-K)). I can't figure out the volt-coulomb as i don't know the voltage. How can I calculate the coulomb? Then the volt-coulomb? And is Mol-K (Mole)(Kelvin)? If so, do I factor in the temperature in Kelvins twice?
For N (n = number of moles of electrons exchanged in the electrochemical reaction) do i just multiply the moles per electron?
Finally - What exactly am I dividing to calculate Q? (How do I calculate Q?)

Please explain this all in basic jargon - or just normal English if you prefer. My vocabulary is limited. Thank you!
 
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