State Function?

Moderators: Chem_Mod, Chem_Admin

Posts: 19
Joined: Sat Nov 23, 2013 3:00 am

State Function?

Postby 804302066 » Mon Mar 10, 2014 10:17 pm

Why is E (cell potential) not a state function?

Posts: 237
Joined: Sat Nov 23, 2013 3:00 am

Re: State Function?

Postby irisc23 » Mon Mar 10, 2014 10:22 pm

Cell potential is not a state function. I cannot add two of the same reaction and get double the cell potential (i.e. if I have F2 + 2e- --> 2F- and add it to F2 + 2e- --> 2F-, the potential remains the same). This violates the definition of a state function.

However, n*E IS a state function as it represents the Gibbs free energy (divided by Faraday's constant). This quantity is the cell potential multiplied by the number of electrons transferred per reaction.

Return to “Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams”

Who is online

Users browsing this forum: No registered users and 1 guest