Nitric oxide,an important pollutant in air,is formed from the elements nitrogen and oxygen at high temperatures,such as those obtained when gasoline burns in an automobile engine.At 2000°C,K for the reaction N₂(g) + O₂(g) 2NO(g) is 0.01.
-Predict the direction in which the system will move to reach equilibrium at 2000°C if 0.4 moles of N₂,0.1 moles of O₂,and 0.08 moles of NO are placed in a 1.0-liter container.

Question

Nitric oxide,an important pollutant in air,is formed from the elements nitrogen and oxygen at high temperatures,such as those obtained when gasoline burns in an automobile engine.At 2000°C,K for the reaction N₂(g) + O₂(g)

2NO(g) is 0.01.
-Predict the direction in which the system will move to reach equilibrium at 2000°C if 0.4 moles of N₂,0.1 moles of O₂,and 0.08 moles of NO are placed in a 1.0-liter container.

Quizplus · Accepted Answer

According to the given equilibrium reaction, the formation of NO requires the consumption of N₂ and O₂. Therefore, to reach equilibrium, the system will shift in the forward direction to produce more NO and consume N₂ and O₂. This means that the concentration of NO will increase and the concentrations of N₂ and O₂ will decrease, which is described by choice B.

Nitric Oxide,an Important Pollutant in Air,is Formed from the Elements