Nernst


Moderators: Chem_Mod, Chem_Admin

Zenita Leang 2K
Posts: 67
Joined: Fri Sep 28, 2018 12:28 am

Nernst

Postby Zenita Leang 2K » Sat Mar 02, 2019 12:53 pm

Where does the 0.0592 come from in the nernst equation?

E = E (standard) — (0.0592/n) log Q

Annalyn Diaz 1J
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: Nernst

Postby Annalyn Diaz 1J » Sat Mar 02, 2019 1:07 pm

The 0.0592 comes from changing the natural log in the original equation ( E=E(standard)-(RT/nF)lnQ ) to log base 10, which yields E=E(standard)-(2.303RT/nF)logQ. At standard temperature (298K), 2.303RT/F = 0.0592, which gives you the representation of the Nernst equation that first mentioned, E = E (standard) — (0.0592/n) log Q.

Amy Dinh 1A
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Nernst

Postby Amy Dinh 1A » Sat Mar 02, 2019 3:15 pm

0.0592 comes from changing the equation from terms of natural log (ln) to log base ten.

MadelineHlobik
Posts: 33
Joined: Fri Sep 28, 2018 12:22 am

Re: Nernst

Postby MadelineHlobik » Sat Mar 02, 2019 3:26 pm

What sort of energy/cell potential does Nernst equation tell us?

Alyssa Wilson 2A
Posts: 65
Joined: Fri Sep 28, 2018 12:18 am

Re: Nernst

Postby Alyssa Wilson 2A » Sat Mar 02, 2019 3:34 pm

MadelineHlobik wrote:What sort of energy/cell potential does Nernst equation tell us?


I believe the Nernst equation tells us the equilibrium potentials of the cell. For each ion, the equilibrium potential is the membrane potential where the net flow is zero through any open channel.


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 2 guests