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2 BaO2(s) ⇄ 2 BaO(s) + O2(g) ΔH° = 162 kJ/mol_rxn A sealed rigid vessel contains BaO2(s) in equilibrEquilibrium Chemistry Question

Question

2 BaO2(s) ⇄ 2 BaO(s) + O2(g) ΔH° = 162 kJ/mol_rxn

A sealed rigid vessel contains BaO2(s) in equilibrium with BaO(s) and O2(g) as represented by the equation above. Which of the following changes will increase the amount of BaO2(s) in the vessel?

A.

Removing a small amount of O2(g)

B.

Removing a small amount of BaO(s)

C.

Adding He gas to the vessel

D.

Lowering the temperature

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