How to know when dissolution is complete?

In a given solubility equilibrium, I know that if $ Q >K\_s$, then the salt will precipitate until $ Q =K\_s$. If $ Q <K\_s$, however, would the precipitate dissolve until $ Q =K\_s$ too?




You've described the general tendency for any equilibrium process, including solubility. So, the short answer is yes, you will dissolve more until the reaction quotient is equal to the equilibrium constant.


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