EQUALIBRIUM - Soluability, Precipitation and Complex Ion Equalibria
9 important questions on EQUALIBRIUM - Soluability, Precipitation and Complex Ion Equalibria
What is solubility product? Ksp?
What is a saturated solution?
How to determine the Ksp from solubility?
- Determine your concentrations
- Make an ICE Table (solid breaking down to its components)
- Solve for Ksp using solubility
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How to determine the solubility from the Ksp?
- Make an ICE table (solids break down to its components)
- Solve for the solubility using the Ksp value and the variables you used for the ICE table.
What units do soluability when determined from the Ksp?
Which has a larger Ksp?
- AgI (2# of ions) Ksp = 8.5*10^-17 ; solubility = 9.2*10^-9
- CuI (2# on ions) Ksp = 1.3*10^-12 ; solubility = 1.1*10^-6
What is the Common Ion Effect?
- It is when a weak acid is added to a salt which contains the same anion
- EX: HNO2 and NaNO2
How to determine if the given initial ion will result in a precipitation of an insoluble solid?
- Q>Ksp reaction will proceed LEFT, Precipitation occurs
- Q<Ksp reaction will proceed RIGHT, No precipitation
- Q =Ksp solution is saturated, no precipitation occurs
What are examples of soluble?
- Nitrates (NO3-) salts
- Alkali metals (Group 1)
- Ammonium salts
- Cl, Br, I salts except with Ag+, Pb2+, Hg2+
- Sulfates salts except with Sr2+, Ba2+, Pb2+, Hg2+
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