The formula to calculate Gibbs Free Energy (G) is:
\[ G = H - T \cdot S \]
Where:
Gibbs Free Energy is a thermodynamic potential that can be used to calculate the maximum of reversible work that may be performed by a thermodynamic system at a constant temperature and pressure.
Enthalpy is the thermodynamic quantity equivalent to the total heat content of a system.
Temperature is the degree or intensity of heat present in a substance or object.
Entropy is the measure of a system’s thermal energy per unit temperature that is unavailable for doing useful work.
Let's assume the following values:
Using the formula:
\[ G = H - T \cdot S \]
Evaluating:
\[ G = 1510 - 298 \cdot 71 \]
The Gibbs Free Energy is -19648 Joule.
| Enthalpy (Joule) | Temperature (Kelvin) | Entropy (Joule per Kelvin) | Gibbs Free Energy (Joule) |
|---|---|---|---|
| 1500 | 290 | 70 | -18,800.000000000000000 |
| 1500 | 290 | 71 | -19,090.000000000000000 |
| 1500 | 290 | 72 | -19,380.000000000000000 |
| 1500 | 290 | 73 | -19,670.000000000000000 |
| 1500 | 290 | 74 | -19,960.000000000000000 |
| 1500 | 290 | 75 | -20,250.000000000000000 |
| 1500 | 295 | 70 | -19,150.000000000000000 |
| 1500 | 295 | 71 | -19,445.000000000000000 |
| 1500 | 295 | 72 | -19,740.000000000000000 |
| 1500 | 295 | 73 | -20,035.000000000000000 |
| 1500 | 295 | 74 | -20,330.000000000000000 |
| 1500 | 295 | 75 | -20,625.000000000000000 |
| 1500 | 300 | 70 | -19,500.000000000000000 |
| 1500 | 300 | 71 | -19,800.000000000000000 |
| 1500 | 300 | 72 | -20,100.000000000000000 |
| 1500 | 300 | 73 | -20,400.000000000000000 |
| 1500 | 300 | 74 | -20,700.000000000000000 |
| 1500 | 300 | 75 | -21,000.000000000000000 |
| 1550 | 290 | 70 | -18,750.000000000000000 |
| 1550 | 290 | 71 | -19,040.000000000000000 |
| 1550 | 290 | 72 | -19,330.000000000000000 |
| 1550 | 290 | 73 | -19,620.000000000000000 |
| 1550 | 290 | 74 | -19,910.000000000000000 |
| 1550 | 290 | 75 | -20,200.000000000000000 |
| 1550 | 295 | 70 | -19,100.000000000000000 |
| 1550 | 295 | 71 | -19,395.000000000000000 |
| 1550 | 295 | 72 | -19,690.000000000000000 |
| 1550 | 295 | 73 | -19,985.000000000000000 |
| 1550 | 295 | 74 | -20,280.000000000000000 |
| 1550 | 295 | 75 | -20,575.000000000000000 |
| 1550 | 300 | 70 | -19,450.000000000000000 |
| 1550 | 300 | 71 | -19,750.000000000000000 |
| 1550 | 300 | 72 | -20,050.000000000000000 |
| 1550 | 300 | 73 | -20,350.000000000000000 |
| 1550 | 300 | 74 | -20,650.000000000000000 |
| 1550 | 300 | 75 | -20,950.000000000000000 |
| 1600 | 290 | 70 | -18,700.000000000000000 |
| 1600 | 290 | 71 | -18,990.000000000000000 |
| 1600 | 290 | 72 | -19,280.000000000000000 |
| 1600 | 290 | 73 | -19,570.000000000000000 |
| 1600 | 290 | 74 | -19,860.000000000000000 |
| 1600 | 290 | 75 | -20,150.000000000000000 |
| 1600 | 295 | 70 | -19,050.000000000000000 |
| 1600 | 295 | 71 | -19,345.000000000000000 |
| 1600 | 295 | 72 | -19,640.000000000000000 |
| 1600 | 295 | 73 | -19,935.000000000000000 |
| 1600 | 295 | 74 | -20,230.000000000000000 |
| 1600 | 295 | 75 | -20,525.000000000000000 |
| 1600 | 300 | 70 | -19,400.000000000000000 |
| 1600 | 300 | 71 | -19,700.000000000000000 |
| 1600 | 300 | 72 | -20,000.000000000000000 |
| 1600 | 300 | 73 | -20,300.000000000000000 |
| 1600 | 300 | 74 | -20,600.000000000000000 |
| 1600 | 300 | 75 | -20,900.000000000000000 |