Question: We first write the equilibrium expression for the reaction. Second, we substitute the concentration values into the expression. The large K eq for this reaction

We first write the equilibrium expression for the reaction.

Keg [NO2]2 [NO]2 [02]

Second, we substitute the concentration values into the expression.

Keq : [2.2 106]2 [1.5 10-11] [8.9 103] 2.4 1012

The large K_eq for this reaction indicates that the equilibrium overwhelmingly favors the formation of the product, NO₂. However, K_eq does not indicate the rate of reaction. In the atmosphere, the conversion of NO to NO₂ takes place slowly.

Keg [NO2]2 [NO]2 [02]

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