# Problem: The K of the reaction: NO2(g) + NO3(g) ⇌ N2O5(g) is K= 2.1x10-20. What can be said about this reaction?a. At equilibrium the concentration of products and reactants is about the sameb. At equilibrium the concentration of products is much greater than the concentration of reactantsc. At equilibrium the concentration of reactants is much greater than that of productsd. There are no reactants left over once the reaction reaches equilibrium

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###### Problem Details

The K of the reaction: NO2(g) + NO3(g) ⇌ N2O5(g) is K= 2.1x10-20. What can be said about this reaction?

a. At equilibrium the concentration of products and reactants is about the same

b. At equilibrium the concentration of products is much greater than the concentration of reactants

c. At equilibrium the concentration of reactants is much greater than that of products

d. There are no reactants left over once the reaction reaches equilibrium

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