The greater the Ksp the more ions are in solution, hence the greater the molar solubility. However, you can only directly compare salts that give equivalent numbers of ions in solution. For example, you can compare the Ksp’s of all salts with a 1:1 ion ratio like: AgBr, BaSO4 etc.
How do you interpret Ksp values?
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.
What does a large Ksp value mean?
Solubility product constant is simplified equilibrium constant (Ksp) defined for equilibrium between a solids and its respective ions in a solution. Its value indicates the degree to which a compound dissociates in water. The higher the solubility product constant, the more soluble the compound.
Why do Ksp values differ?
K s p represents how much of the solute will dissolve in solution. The value of K s p varies depending on the solute. The more soluble a substance is, the higher its K s p chemistry value.
How do you rank up solubility with Ksp?
BaF2 > Ag2CO3 > Pb(OH)2 All salts have the same number of ions so you just compare the 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.
Will a higher or lower Ksp value 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 …
What is Ksp formula?
In general, MaXb(s) <=> aM+b(aq) + bX–a(aq) is expressed as Ksp = [M+b]a[X−a]b. These expressions are called solubility product constant expressions because they involve the product of the equilibrium concentrations of the constituent ions, each raised to the power corresponding to the number of ions in the formula.
Are higher Ksp values more soluble?
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.
Why does NaCl not have a Ksp value?
Solution : Ksp values are given for those compounds which are partially soluble or insoluble in water . But , we know NaCl is strong electrolyte and it completely dissociated in water . … Therefore , the Ksp of NaCl is not present .
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.
Why does Ksp increase with temperature?
An increase in temperature puts a stress on the equilibrium condition and causes it to shift to the right. The stress is relieved because the dissolving process consumes some of the heat. Therefore, the solubility (concentration) increases with an increase in temperature. If the process is exothermic (heat given off).
What is meant by Le Chatelier’s principle?
: a statement in physics and chemistry: if the equilibrium of a system is disturbed by a change in one or more of the determining factors (as temperature, pressure, or concentration) the system tends to adjust itself to a new equilibrium by counteracting as far as possible the effect of the change.