Gibbs Free Energy
Asked by Vikram Aditya · 2 years ago
What is Gibbs free energy and how is it used to determine the spontaneity of a chemical reaction?
1 Answer
Gibbs free energy (G) is a thermodynamic potential that combines enthalpy (H) and entropy (S):
G = H - TS
Where T is temperature in Kelvin.
To determine spontaneity:
- If ΔG < 0, the reaction is spontaneous
- If ΔG = 0, the reaction is at equilibrium
- If ΔG > 0, the reaction is non-spontaneous
The equation ΔG = ΔH - TΔS is used to calculate the change in Gibbs free energy for a reaction, helping predict its spontaneity under given conditions.
G = H - TS
Where T is temperature in Kelvin.
To determine spontaneity:
- If ΔG < 0, the reaction is spontaneous
- If ΔG = 0, the reaction is at equilibrium
- If ΔG > 0, the reaction is non-spontaneous
The equation ΔG = ΔH - TΔS is used to calculate the change in Gibbs free energy for a reaction, helping predict its spontaneity under given conditions.
NEET Faculty · 2 years ago
Have the same doubt, or know the answer? Join free to ask and answer NEET questions.
Get Started Free Log in