The emission of NO₂ by fossil fuel combustion can be prevented by injecting gaseous urea into the combustion mixture. The urea reduces NO (which oxidizes in air to form NO₂) according to the reaction:

Suppose that the exhaust stream of an automobile has a flow rate of 2.55 L/s at 655 K and contains a partial pressure of NO of 12.4 torr. What total mass of urea is necessary to react completely with the NO formed during 8.0 hours of driving?

Transcribed Image Text:

2 CO(NH,)2(g) +4NO(g) + O,(g) 4 N₂(g) + 2 CO₂(g) + 4 H₂O(g)