For the reaction below, what can you conclude about ΔG°ᵣₓₙ for the reaction? H₂(g) + Br₂(g) ⇄ 2HBr(g) K = 2 × 10¹⁹ (at 25°C).
a. ΔG°ᵣₓₙ < 0
b. ΔG°ᵣₓₙ = 0
c. ΔG°ᵣₓₙ > 0
d. There is not enough information to determine the sign or magnitude of ΔG°ᵣₓₙ.