What is the equilibrium constant for a reaction at 25 °C.The value of ΔG° is -57.5 kJ/mol.

Question

Quizplus · Accepted Answer

The equilibrium constant (K) can be calculated using the following equation:
ΔG° = -RT lnK
Where R is the gas constant (8.314 J/mol.K), T is the temperature in Kelvin (25 + 273 = 298 K). 
-57.5 kJ/mol = -8.314 J/mol.K x 298 K x ln(K)
ln(K) = 22.2106
K = e^(22.2106) = 1.2 x 10^11. Therefore, the answer is D, 1.2 × 10^11.

What Is the Equilibrium Constant for a Reaction at 25