Knowing the equilibrium constants for the formation of the following substances at 25°C, calculate the equilibrium constant K, of the combustion of methane CH₁ (g) + 2O₂(g)CO₂(g) + 2H₂O(g)
C(s) + 2H₂(g)CH₄ (g) Kc,1 = 1.021
C(s) + O₂(g)CO₂(g) K,21.172
H₂(g)+1/2O₂(g)H₂O(g) K,31.097
A. K=1.381
B. K=1.440
C. K-0.724
D. K-1.259
