The equilibrium-constant of the reaction no2(g)+no3(g)⇌n2o5(g) is k=2.1×10−20. what can be said about this reaction?

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30-08-2017
Chemistry

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The equilibrium-constant of the reaction no2(g)+no3(g)⇌n2o5(g) is k=2.1×10−20. what can be said about this reaction?

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meerkat18 meerkat18 · Answer 1 · 2017-09-12T16:37:36+02:00

The equilibrium constant is a ratio of the concentration of the products raised to their respective stoichiometric coefficients to the concentration of the reactants raised to their respective stoichiometric coefficients. For this reaction, K is equal to

K = [N₂O₅]/[NO₂][NO₃]

So, if K is greater than 1, the reaction would favor the product side. Otherwise, it would favor the reactant side. Since the K here is less than 1 as manifested by the negative exponent of 10, the reaction would favor or would be spontaneous for the forward reaction.