The equilibrium constant (K p) for the formation of the air pollutant nitric oxi

Question

The equilibrium constant (K p) for the formation of the air pollutant nitric oxide (NO) in an 11 automobile engine at 537 C is 4.5 x 10 (a) Calculate the partial pressure of NO under these conditions if the partial pressures of nitrogen and oxygen are 3.00 and 0.012 atm, respectively. x 10 atm (b) Repeat the calculation for atmospheric conditions in which the partial pressures of nitrogen and oxygen are 0.78 and 0.21 atm, and the temperature is 25C. The K P for the reaction is 4.0 x 10 31 at this temperature.) x 10 atm c) Is the formation of NO endothermic or exothermic?

Explanation / Answer

1.1.27x10^-6atm

2.2.559x10^-16atm

3,The equilibrium constant increases when the temperature is higher, so the formation of NO is endothermic.

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