The standard Gibbs energies of formation, f G, for Na 2 O(s) and Na 2 O

The standard Gibbs energies of formation, Δ_fG°, for Na₂O(s) and Na₂O₂(s) are -379.09 kJ mol‾¹ and -449.63 kJ mol‾¹, respectively, at 298 K. Calculate the equilibrium constant for the reaction below at 298 K. Is Na₂O₂(s) thermodynamically stable with respect to Na₂O(s) and O₂(g) at 298 K?

Transcribed Image Text:

Na₂O₂ (s) Na₂O(s) + O2(g)