20.5 Determining if a Precipitate forms (The Ion Product) (Video)
- Page ID
- 342613
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Video Topics
We are interested in knowing if a precipitate forms if we mix two solutions that contain both of the common ions of an insoluble salt.
To find this out we find Qsp, which is also called the ion product.
AB(s) ⇔ A+(aq) + B-(aq)
Qsp is the non-equilibrium concentration of the insoluble salt’s ion plugged into the solubility product.
If Qsp > Ksp, The solution is supersaturated, the equilibrium must shift left and form a precipitate to reach equilibrium.
If Qsp < Ksp The solution is unsaturated and no precipitate forms.
If Qsp = Ksp the solution is saturated.
This video contains examples of determining if a precipitate will form through the calculation of Qsp.
Link to Video
Determining if a Precipitate forms (The Ion Product): https://youtu.be/Naf7PoHPz8Y
Attribution
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Prof. Steven Farmer (Sonoma State University)