The reaction Si(s)+2H₂(g)⇌SiH₄(g) has a standard enthalpy of ΔH=−61.9kJ mol−1 and standard entropy of ΔS=−76.7J K−1mol−1. What is the equilibrium constant at 298 K?
a. K=6.73×10⁻¹⁸
b. K=8.41×10⁻³
c. K=1.49×10²
d. K=2.43×10⁸