The solubility product constant (Ksp) describes the equilibrium between a solid and its constituent ions in a solution. The value of the constant identifies the degree to which the compound can dissociate in water. The higher the Ksp, the more soluble the compound is.
Is lower Ksp more soluble?
What is Ksp? Ksp (Solubility product constant) is the equilibrium between a solid and its respective ions in a solution. The value of the constant identifies the degree of which the compound can dissociate in water. For example the higher the Ksp the more soluble the compound is.
Does higher solubility mean higher Ksp?
The solubility product constant, Ksp, is the equilibrium constant for a solid substance dissolving in an aqueous solution. It represents the level at which a solute dissolves in solution. The more soluble a substance is, the higher the Ksp value it has.
How does Ksp compare to solubility?
The relative MOLAR solubility of salts (saturated solution) can be determined by comparing Ksp values. The greater the Ksp the more ions are in solution, hence the greater the molar solubility.
How does Ksp predict solubility?
Set up an ICE problem (Initial, Change, Equilibrium) in order to use the Ksp value to calculate the concentration of each of the ions. The concentration of the ions leads to the molar solubility of the compound. Use the molar mass to convert from molar solubility to solubility.
How is KSP calculated?
Let’s do an example: The solubility of Ag2CrO4 in water is 1.31 x 10-4 moles/L. Calculate the value of Ksp . Using mole ratios, the [Ag+] will go up by (2 x 1.31 x 10-4 moles/L) = 2.62 x 10-4 moles/L.
What 4 factors affect solubility?
Factors affecting solubility
- Temperature. Basically, solubility increases with temperature. …
- Polarity. In most cases solutes dissolve in solvents that have a similar polarity. …
- Pressure. Solid and liquid solutes. …
- Molecular size. …
- Stirring increases the speed of dissolving.
Does a higher KSP precipitate first?
When two anions form slightly soluble compounds with the same cation, or when two cations form slightly soluble compounds with the same anion, the less soluble compound (usually, the compound with the smaller Ksp) generally precipitates first when we add a precipitating agent to a solution containing both anions (or …
Which is the most soluble based on KSP?
The salt with the largest Ksp is most soluble. If they didn’t have the same number of ions then you would need to calculate molar solubility. 3.
Which of the following is the least soluble KSP?
CaF2 : Ksp = 3.9 x 10-11 (2) PbCl2: Ksp = 1.6 x 10-5 (3) AgCl : Ksp = 1.8 x 10-10 (4) Agloz: Ksp = 3.1 x 108.
Does Ksp increase with temperature?
If you increase the temperature more products will be formed. But on top of that, apparently the Ksp increases as well. This is different from adding more of A which shifts the reaction to the products side.
Is AgCl soluble in water?
It is well established in the pedagogical literature that AgCl is insoluble in water while NaCl and KCl are soluble: applications of this difference are made in elementary studies of both qualitative and quantitative analysis. What is usually left unsaid, however, is why AgCl is so much less soluble than NaCl or KCl.
What is the solubility of Al OH 3 in the presence of 0.2 M NaOH?
The molar solubility of Al(OH)_(3) in 0.2 M NaOH solution is x xx 10^(-22)”mol/L”. Given that, solubility product of Al(OH)_(3)=2.4xx10^(-24).
How do you solve solubility problems?
Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a given temperature. Such a solution is called saturated. Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to calculate the solubility in g/100g .
What is the relationship between the solubility product constant KSP and temperature?
The solubility of a solid is exponential with respect with temperature. A plot of the solubility product constant, Ksp, vs temperature (K) will give an exponential curve. and T = absolute temperature in degrees Kelvin.