key term - ΔG°

Definition

ΔG°, or standard Gibbs free energy change, is the difference in Gibbs free energy between the products and reactants under standard conditions (1 atm pressure and 298K). It predicts whether a reaction will be spontaneous or not.

Related terms

Standard Conditions:

These are set conditions under which scientific measurements are made, typically at 1 atmosphere of pressure and temperatures around 25 degrees Celsius (298K).

Spontaneity:

In chemistry, spontaneity refers to a process that can occur without being driven by an outside force. A negative ΔG° indicates a spontaneous reaction.

Entropy (ΔS): This is the measure of disorder or randomness in a system. It plays a key role in determining Gibbs free energy.