With the initial concentrations: [A] = 0.000500 M, = 0.000698 M,

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The discussion focuses on calculating the equilibrium constant (K) for a chemical reaction given the initial concentrations of reactants A and B, and the equilibrium concentration of product C. The initial concentrations are [A] = 0.000500 M and [B] = 0.000698 M, with [C] at equilibrium being 0.0000866 M. The formula used for K is K = [C]/([A]*[B]), leading to a calculated value of K = 344. However, the accuracy of this value is questioned due to insufficient information about the reaction.

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with the initial concentrations: [A] = 0.000500 M, = 0.000698 M,

with the initial concentrations: [A] = 0.000500 M, = 0.000698 M, and [C] = 0 M, find the value of K if [C] = 0.0000866 M at equilibrium.

K = [C]/([A]*)

just want to check my answer of 344, seems wrong to me
 
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You are asking us too much - to guess what the reaction is, work it out, if not agreement make another guess, ... Without that information and your working you will probably not get an answer.
 

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