Consider the following reaction: 3C(s)+ 4H₂(g)→ C₃H₈(g); ΔH° = -104.7 kJ; ΔS° = -287.4J/K at 298 K What is the equilibrium constant at 400.0 K for this reaction?

Question

Quizplus · Accepted Answer

To find the equilibrium constant (K) at 400 K, use the van't Hoff equation. First, calculate ΔG° at 298 K using ΔG° = ΔH° - TΔS°. Then, use ΔG° = -RTlnK to find K at 298 K. Finally, apply the van't Hoff equation to find K at 400 K. The calculations show that the equilibrium constant is approximately 4.6 × 10^-2.

Consider the Following Reaction