Sodium carbonate can be made by heating sodium bicarbonate: 2NaHCO3(s)→ Na2CO3(s) + CO2(g) + H₂O(g) At 25°C, for this reaction, AHrxn = 128.9 kJ/mol and AG rxn = 33.1 kJ/mol. Above what minimum temperature will the reaction become spontaneous under standard state conditions?

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