Nitrogen dioxide can dissociate to nitric oxide and oxygen. 2NO₂(g) ⇄ 2NO(g) + O₂(g) ΔH°_rxn = +114 kJ
Under which reaction conditions would you expect to produce the largest amount of oxygen?

Question

Nitrogen dioxide can dissociate to nitric oxide and oxygen. 2NO₂(g) ⇄ 2NO(g) + O₂(g) ΔH°_rxn = +114 kJ Under which reaction conditions would you expect to produce the largest amount of oxygen?

Quizplus · Accepted Answer

According to Le Chatelier's principle, increasing temperature favors endothermic reactions. Since the dissociation of nitrogen dioxide is endothermic, high temperature would shift the reaction to the right, producing more oxygen. However, high pressure would favor the reverse reaction, leading to less oxygen production. Therefore, the best conditions for producing the largest amount of oxygen would be high temperature and low pressure.

Nitrogen Dioxide Can Dissociate to Nitric Oxide and Oxygen