Solubility Product
The solubilities of ionic compounds that dissociate in water to form cations and anions vary greatly. Some compounds are very soluble and can even absorb moisture from the atmosphere, while others are very insoluble. The solubility product is a kind of equilibrium constant whose value depends on temperature. Ksp usually increases in solubility and therefore increases with increasing temperature.
Solubility Product formula
The solubility product constant is used to represent a saturated solution of an ionic compound with relatively low solubility. Saturated solutions are in dynamic equilibrium between ionic compounds and undissolved solids.
The Ksp expression is given in the form of the following expression:
MxAy (s) ⇢ xMy+(aq)+yAx−(aq)
A typical equilibrium constant is described as follows,
Kc = [My+]x[Ax−]y
Significance of solubility product
- The solubility of a substance is determined by the size of its solubility product.
- A specific form of non-uniform equilibrium constant or equilibrium constant is the solubility product. This is related to saturated solutions in which the ionic components are not completely dissolved.
- The solubility product changes with temperature, so the temperature at which they are measured should always be stated.
Check: Solubility Equilibria
Solubility Formula
Solubility is defined as the maximum amount of solute that can be dissolved in a known amount of solvent at a particular temperature. A solution can be defined as a homogeneous mixture of one or more solutes in a solvent. Adding sugar cubes to a cup of tea or coffee is a very common example of a solution. And the property that helps sugar molecules dissolve is called solubility. Therefore, the term solubility can be defined as the property of a substance or solute that is soluble in a particular solvent. A solute is any component that can be liquefied in a solvent, either solid, liquid, or gas.
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