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For the reaction 2BaO₂(s) ⇌ 2BaO(s) + O₂(g), ΔH = +ve. In equilibrium condition, pressure of O₂ is dependent on:

1. Mass of BaO₂
2. Mass of BaO
3. Temperature of equilibrium
4. Mass of BaO₂ and BaO both

Correct answer: Temperature of equilibrium

Solution

Since ΔH is positive, the reaction is endothermic. According to Le Chatelier's principle, the equilibrium shifts with temperature changes, making the pressure of O₂ dependent on temperature.

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