Favoring reactions

[Emily Lo 1J]

If the anode has a larger value than the cathode, does the reaction favor the products? Does it have to be the cathode that is a larger value for the reaction to favor the products? And is this something we should know?

[Jacey Yang 1F]

The reaction will favor the reactants if the anode has a larger value than the cathode, because the overall cell potential will be negative, so delta G will be positive.

[Subashni Rajiv 1K]

Looking at the Nernst Equation and how the variables related to one another can help you understand the effect of anode/cathode differences.

[Sanjana Borle 2K]

Using the equation deltaG=-nfE(naught), if E(naught) is calculated using E(cathode)-E(anode), and E anode is bigger, this means that the total cell potential will be negative. Since negative times negative is positive, delta G is positive, which tells us that the forward reaction is not favored, but rather the reverse.

[chimerila]

For nonstandard cell potentials, looking at the proportions of products and reactants when calculating Q can also help you determine which direction the reaction favors. For example, if Q is a large number (so there would be a lot of product in proportion to reactants), it would be a product favored system. If Q is a small number (so there would be a lot of reactant), it would be a reactant favored system.

[Jialun Chen 4F]

In this case, the reverse direction or reactant side is favored since the reaction is spontaneous when Ecellnaught is positive.

[205389184]

The forward reaction will be favored if delta G is negative and vice versa

[ramiro_romero]

Correct, if the anode value is larger than the cathode, the reactants/ reverse reaction will be favored. You should also know that this means a negative cell potential, and a positive delta G