Solubility limit

Solubility limit

Solubility limit

03/14/17

“How can we determine the maximum concentration of a solute without a precipitate forming?”

 

It is well known that a solute mixed into a solvent will form a percentage of the substance composition. However, it is also well known that if this concentration becomes too high, then precipitation will occur, inducing a solid phase to exist within the substance. So how can we determine the solubility limit for a substance? Well, to begin, let’s analyze a phase diagram with the solute percentage composition as the independent variable. We would notice that as we increase the composition, the phase of the substance will be closer to the solubility limit, or the point in which precipitation is active. However, in addition to percentage composition, the temperature of a substance also has an effect on the solubility limit. 

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