Nernst equation and K


Moderators: Chem_Mod, Chem_Admin

Jorja De Jesus 2C
Posts: 121
Joined: Sat Jul 20, 2019 12:15 am

Nernst equation and K

Postby Jorja De Jesus 2C » Sun Mar 01, 2020 11:30 pm

When would you use K instead of Q? Does the electron flow stop at equilibrium? If so why use K?

Jacey Yang 1F
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: Nernst equation and K

Postby Jacey Yang 1F » Sun Mar 01, 2020 11:43 pm

You use K when the concentrations of products and reactants are at equilibrium. Electron flow stops at equilibrium because the voltage drops down to 0.

Hui Qiao Wu 1I
Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

Re: Nernst equation and K

Postby Hui Qiao Wu 1I » Sun Mar 01, 2020 11:53 pm

K represents the reaction is at equilibrium.

Alexandra Bartolome 2H
Posts: 102
Joined: Sat Jul 20, 2019 12:17 am

Re: Nernst equation and K

Postby Alexandra Bartolome 2H » Mon Mar 02, 2020 1:09 am

K is used for redox reactions at equilibrium since K is the equilibrium constant. Electron flow does stop at equilibrium since the concentration changes to the point where Q = K and the cell potential becomes 0.


Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

Who is online

Users browsing this forum: No registered users and 1 guest