Go=0

[EMurphy_2L]

when does G*=0

[Wendy 1E]

In lecture today we learned that ΔG is zero at a reaction's boiling point.

[JesseAuLec1Dis1G]

Gibb's free energy is at zero when the reaction is at equilibrium.

[Abigail Sanders 1E]

To clarify the last two responses, Gibbs Free energy is 0 both at the boiling point and when the reaction is at equilibrium.

[alex_4l]

G = 0 when the rate of forward reaction equals the rate of the reverse reaction (equilibrium)

[preyasikumar_2L]

ΔG = 0 means that the system is at equilibrium - the forward and reverse reactions are occurring at the same rate at the same time.

[Eva Zhao 4I]

∆G˚=0 when products and reactants are in their standard state and K=1. Note that this is not common.

[Justin Quan 4I]

To add on, you can figure out when ∆G = 0 by using the mathematical relationships between ∆G˚= - RTlnK and ∆G = ∆G˚ + RTlnQ. We know that at equilibrium Q=K. If we substitute ∆G˚out, then ∆G = RTlnQ - RTlnK, thus ∆G = RTlnQ - RTlnK = RTlnK - RTlnK = 0 when the reaction is at equilibrium.