Electrochemistry

[Karen Elrayes 1L]

What are all the equations that we are responsible for in electrochemistry? That section I feel like we breezed through just because it overlapped with midterm 2.

[ColmConnolly3D]

Hi Karen, the only equations I can find that we are responsible for are as follows
Nernst Equation Ecell = Estd - ((RT)/(nF)) ln([P]/[R]) (This can be written many ways, but this is the most universal)
Nernst PrecursorDelta(G) = -nFE

and then some more conceptual stuff like redox balancing, cathode is + and anode is -, and how galvanic cells work.

Hope this helps!
Colm

[Rohit Srinivas 2D]

Adding on to the reply above, you also need to know how to calculate cell potential from a list of standard reduction potentials.

[Wasila Sun 2I]

The nerst equation, calculating cell potential, calculating gibbs free energy in relation to E are mostly the equations we used in electrochemistry. All of them should be near each other lower on the equation sheet on Dr. Lavelle's website.

[Kareena Patel 1G]

I think that these are the ones we need to know. Most of them are on the equation sheet though.

Screen Shot 2021-03-08 at 9.32.51 AM.png (28.25 KiB) Viewed 663 times

[Samantha Pedersen 2K]

A couple other equations that might be useful are E naught = (RT/nF)*lnK and E naught (cell) = E naught (cathode) - E naught (anode). Both of these equations are on the equation sheet, so you don't need to memorize them. Also keep in mind that for the second equation, you can add the oxidation and reduction half reactions together with the sign flipped for the oxidation half reaction if that method makes more sense to you!

[Aditya Sundaram 3D]

I think you need to know Enaught and all of it's uses basically.

[Katy Austin 1K]

I think that these are the ones we need to know. Most of them are on the equation sheet though. Screen Shot 2021-03-08 at 9.32.51 AM.png

for the last 2 equations, why does ln change to log?

[Katy Austin 1K]

you may also need to use equation: lnK=nFEcell o/RT
because both sides equal delta Go

[Neha Jonnalagadda 2D]

Some of the equations necessary are Enaught, the nerst equation, and calculating cell potential.