Solution: The equilibrium constant (KP) for the formation of
Chapter 14, Problem 14.67(choose chapter or problem)
The equilibrium constant (KP) for the formation of the air pollutant nitric oxide (NO) in an automobile engine at 530C is 2.9 3 10211: N2(g) 1 O2(g) 2NO(g) (a) Calculate the partial pressure of NO under these conditions if the partial pressures of nitrogen and oxygen are 3.0 atm and 0.012 atm, respectively. (b) Repeat the calculation for atmospheric conditions where the partial pressures of nitrogen and oxygen are 0.78 atm and 0.21 atm and the temperature is 25C. (The KP for the reaction is 4.0 3 10231 at this temperature.) (c) Is the formation of NO endothermic or exothermic? (d) What natural phenomenon promotes the formation of NO? Why?
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