Solid sodium peroxide (Na202) reacts with liquid water yielding aqueous sodium hydroxide and oxygen gas. How much heat is released when 250.0 L of oxygen gas is produced from the reaction of sodium peroxide and water if the reaction is carried out in an open container at 1.000 atm pressure and 25 degrees Celsius?
(Given: delta H of formation[Na2O2 (s)]= -510.9 kJ/mol ;
delta H of formation[NaOH (aq)] = -469.2 kJ/ mol ;
delta H of formation [H2O(l)] = -285.8 kJ/mol