Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
ln(K) represents the natural logarithm of the equilibrium constant (K) for a reaction. It is used to calculate the standard Gibbs free energy change (ΔG°) of a reaction.
The equilibrium constant, denoted by K, quantitatively describes the position of an equilibrium in terms of concentrations or pressures.
logarithm: A mathematical function that gives you the power to which a fixed number must be raised to obtain another value. In this case, we use natural logarithm (ln), which uses Euler's number (e) as its base.
concentration: The amount of solute present in a given volume or mass of solution.