10 A Flashcards
Equation relating E cell and K
Ecell=(0.0257 V/n)lnK
K, dG, and E cell of a spontaneous reaction
K >1 (prodcuts), dG=negative, Ecell=positive
What equation relates the two dG equations
-nFE=-RTlnK
What does the Nernst equation allow for
Calculating the Cell voltage under any condition
Ecell=E^0cell-(0.0257/n)lnQ
When does Ecell (nonstandard)=0
When reaction is at equilibrium (or K=Q)
A redox reaction can be a source of ____ when the cell potential is not 0
Electricity
What energies are ocnverted in a batter/dry cell
Chemical to electrial energy
When do batteries run out
When concentrations reach equilibria
Fuel cell
Electrochemical cellthat requires a continuous supply of reactants to keep functioning
Electrolysis
The process in which electrical energy is used to cause a NON spontaneous reaction to occur
Electrical to chemical energy