At 298 K the standard free-energy change for the formation of hydrogen iodide is ΔG° = −5.7 kJ mol⁻¹.
H₂(g) + I₂(g) ⇌ 2 HI(g)
(1) Calculate the numerical value of the equilibrium constant, K, at 298 K. Show all work, including how units are treated.
(2) Based on your result, describe whether the equilibrium mixture at 298 K will contain predominantly reactants, predominantly products, or comparable amounts of both. Justify your answer without performing additional calculations.