Question

How would you set up a problem to calculate the equilibrium constant for the listed chemical equation?

CH4 +202 → CO₂ + 2H₂O


A. [CH]⁴ [H2O] / [O2]²

B. [H2O] [O2] / [CH4] [CO]

C. [CO2] [H2O]² / [CH4] [O2]²

D. [CO2] [O2]³ / [CH4] [H2O]​

Answer 1

The equilibrium constant expression for the given chemical equation:

CH4 + 2O2 → CO2 + 2H2O

can be written as:

Kc = [CO2][H2O]^2 / [CH4][O2]^2

the correct answer is C. [CO2] [H2O]² / [CH4] [O2]².