Calculating lnQ in Nernst Equation


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J Medina 2I
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Joined: Wed Sep 25, 2019 12:17 am

Calculating lnQ in Nernst Equation

Postby J Medina 2I » Fri Mar 13, 2020 2:36 pm

In the Nernst Equation, E = Eo -(RT/nF)ln Q , for Q specifically, do we put the anode concentration at the top or the bottom? And why?

ShravanPatel2B
Posts: 100
Joined: Fri Aug 30, 2019 12:18 am

Re: Calculating lnQ in Nernst Equation

Postby ShravanPatel2B » Fri Mar 13, 2020 3:17 pm

It would be Reduction/Oxidation so it would be cathode/anode for ln Q

Kayla Maldonado 1C
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Re: Calculating lnQ in Nernst Equation

Postby Kayla Maldonado 1C » Fri Mar 13, 2020 3:38 pm

The anode goes on the top and the cathode goes on the bottom.The anode is thought to be the diluted concentration and the cathode is concentrated. As the reaction progresses, the concentration will increase in the left (oxidation) anode as the solid electrode dissolves, while the concentration in the right (reduction) cathode decreases as the electrode in that compartment gains mass.
In other words the concentration decreases in the cathode and increases in the anode so think of it like product (diluted) over reactant (concentrated) where the anode is the product.


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