Barium oxide, BaOBaO, is manufactured by decomposition of barium carbonate, BaCO3BaCO3, in a furnace at 600 K:
BaCO3(s)→BaO(s)+CO2(g)BaCO3(s)→BaO(s)+CO2(g)
The spontaneity of a reaction can be determined from the free energy change for the reaction, ΔG∘ΔG∘.
A reaction is spontaneous when the free energy change is less than zero.
A reaction is nonspontaneous when the free energy change is greater than zero.
A reaction is in equilibrium when the free energy change is equal to zero.