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

The dissociation of nitrogen dioxide to nitric oxide and oxygen is an endothermic reaction, meaning it requires energy to occur. Therefore, increasing the temperature will favor the formation of products and increase the amount of oxygen produced. However, increasing pressure will favor the formation of the reactants, as there are fewer moles of gas on the product side. Thus, the best conditions for producing the largest amount of oxygen would be high temperature and low pressure, as this would favor the formation of products while minimizing the number of moles of gas on the reactant side.

Nitrogen Dioxide Can Dissociate to Nitric Oxide and Oxygen