The equilibrium constant for free energy is illustrated by the image below.

To compute for equilibrium constant for free energy, three essential parameters are needed and these parameters are **Change in Free Energy (ΔG°), Gas Constant (R)** and** Temperature (T).**

The formula for calculating equilibrium constant for free energy:

K = exp(^{ΔG°}/_{RT})

Where:

K = Equilibrium Constant for Free Energy

ΔG° = Change in Free Energy

R = Gas Constant

T = Temperature

Let’s solve an example;

Find the equilibrium constant for free energy when the change in free energy is 14, the gas constant is 10 and the temperature is 2.

This implies that;

ΔG° = Change in Free Energy = 14

R = Gas Constant = 10

T = Temperature = 2

K = exp(^{ΔG°}/_{RT})

K = exp(^{14}/_{(10)(2)})

K = exp(^{14}/_{20})

K = exp(0.7)

K = 2.0137

Therefore, the **equilibrium constant for free energy **is **2.0137.**

Continue reading How to Calculate and Solve for Equilibrium Constant for Free Energy | Corrosion