Utilize our Gibbs Free Energy & Reaction Spontaneity Calculator to analyze chemical reactions. Input enthalpy (ΔH), entropy (ΔS), and temperature (T) to instantly determine if a reaction is spontaneous, non-spontaneous, or at equilibrium. An essential tool for students and professionals in chemistry.
Formula:
The Gibbs Free Energy (ΔG) is calculated using the formula:
ΔG = ΔH - TΔS
- ΔG: Gibbs Free Energy Change (typically in kJ/mol)
- ΔH: Enthalpy Change (typically in kJ/mol)
- T: Temperature (in Kelvin, K)
- ΔS: Entropy Change (typically in J/(mol·K))
Important Note: For consistent units, if ΔS is entered in J/(mol·K), it must be divided by 1000 for calculation when ΔH is in kJ/mol. Our calculator handles this conversion automatically.