Consider the decomposition of a metal oxide to its elements where M represents

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Consider the decomposition of a metal oxide to its elements where M represents a generic metal: M2O (s) -----------------------> 2 M (s) + 1/2 O2 (g) Delta Gf (kj/mol) for M2O, M and O = -6.00, 0, 0 <------------------

  1. What is the standard change in Gibbs energy for the reaction as written in the forward direction? Delta Grxn = ? kj/mol
  2. What is the equilibrium constant for this reaction as written in the forward direction at 298 K? K = ?
  3. What is the equilibrium pressure of O2 (g) over M (s) at 298 K? PO2 = ? atm