E and Spontaneity

Moderators: Chem_Mod, Chem_Admin

Kristen Kim 2K
Posts: 70
Joined: Fri Sep 28, 2018 12:16 am

E and Spontaneity

Postby Kristen Kim 2K » Wed Feb 27, 2019 3:43 pm

Is the cell reaction spontaneous if E is positive and nonspontaneous if E is negative?

Posts: 31
Joined: Fri Sep 28, 2018 12:22 am

Re: E and Spontaneity

Postby Felicia1E » Wed Feb 27, 2019 3:45 pm

The cell reaction is spontaneous when E is positive, because in the equation deltaG = -nFE, if E is positive, G is negative, which is a spontaneous process.

Posts: 32
Joined: Fri Sep 28, 2018 12:20 am

Re: E and Spontaneity

Postby Philipp_V_Dis1K » Wed Feb 27, 2019 4:37 pm

a positive E means that the reaction will create energy, "exothermic" in a sense, with no need to put in heat to start the reaction. This is the opposite for negative E values, which are "endothermic" and require energy for the reaction to proceed

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

Who is online

Users browsing this forum: Alexandra Ahlschlager 1L, Zaid Bustami 1B and 4 guests