Nernst equation

Moderators: Chem_Mod, Chem_Admin

Ashley McClearnen 1B
Posts: 59
Joined: Fri Sep 28, 2018 12:26 am

Nernst equation

Postby Ashley McClearnen 1B » Wed Mar 13, 2019 3:15 pm

Can the equations E=E0-(RT/nF)lnQ and E=E0-(0.0592/n)lnQ be used interchangeably?

Chase Yonamine 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:17 am

Re: Nernst equation

Postby Chase Yonamine 1J » Wed Mar 13, 2019 3:56 pm

I believe you meant E=E0-.05916/n logQ. We get 0.05916 from the gas constant (R) x room temperature in kelvin (K) x 2.303logx (which is the conversion from natural log to log base 10) all divided by Faraday's constant. So this equation is the same as E=E0-RT/nf lnQ only when temperature is at room temperature, and you will be using log instead of ln. You can find ph easier with the E=E0-.05916/n logQ equation.

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