Consider the decomposition of a metal oxide to its elements, where M represents a generic metal. M2O(s) 2M(s) + 1/2O2(g) Substance delta G degree f (kJ/mol) M2O(s) -10.10 M(s) 0 O2(g) 0 What is the standard change in Gibbs energy for the reaction, as written, in the forward direction? delta G degree rxn = Number kJ/mol What is the equilibrium constant of this reaction, as written, in the forward direction at 298 K? K = Number What is the equilibrium pressure of O2(g) over M(s) at 298 K? PO2 = Number atm