Reaction BaO (s) BaO(s) O (g); H ve. In equilibrium condition, pressure of O depends on (PUNJAB PMET 2007)

According to the Le-Chatelier’s principle, for an endothermic reaction, with the increase in the temperature, the reaction is favoured in the forward reaction. So, with the increase in temperature, 2 BaO will decompose leading to the formation of 2 O .