What is E?

[Kathryn 1F]

What is E (and E(nought))? In my notes I have E(nought) meaning "Standard Reaction Potential"--but I don't understand what that means, conceptually. Also, what is it used for in a battery?

[Joon Chang 2F]

E is electromotive force or the potential difference in charge between two points. E(nought) is E under standard conditions (all solutes present at 1 molL^-1 and all gases at 1 bar). It can also be thought of as the measure of the electron-pulling power of a single electrode.

[yuetao4k]

The nought symbol indicates standard conditions.

[AnnaYan_1l]

I think another property of standard conditions is 25 degrees C

[Jack DeLeon 1B]

the standard reaction potentials of say a copper zinc (Cu/Zn) battery can be used to find the voltage of the battery. given the standard reaction potentials of the components of the redox reaction, you would add and subtract based on whether they are products or reactants to find the voltage. A positive value indicated a spontaneous reaction