Solubility Formula

Solubility Formula

Calculating how much solute will dissolve in a certain solvent is the core concept behind the Solubility Formula. The molarity of a substance under excessive amounts of undissolved material in a solution in chemical equilibrium is the basic definition of Solubility Formula. There should be a constant temperature throughout the system because solubility is temperature-dependent.

This phenomenon or the quality of the liquid is known as Solubility Formula when a solid component is dissolved in a liquid and the two combine to produce an aqueous solution. The equilibrium constant of the process of a substance dissolving from a solid or liquid state into an aqueous solution is what is known as the solubility product constant. The sign Ksp stands for the liquid’s Solubility Formula, also known as the solubility product formula. Therefore, a suitable definition of Solubility Formula is the ability of the substance known as the solute to dissolve in a solvent to create a solution.

The Solubility Product

A substance’s Solubility Formula is influenced by a variety of variables. Students might attempt to comprehend how the process of the Solubility Formula operates by:

  • When a specific salt is dissolved in a solvent, the interaction forces between the ions and the solvent overpower the ionic forces of attraction (the lattice enthalpy of the ions) within the solute for the solute to dissolve in the solvent.
  • As a result, the solvation enthalpy of the ions decreases every time the solute dissolves in the solvent since usually some energy is released during the Solubility Formula process.
  • The amount of energy released during the Solubility Formula process, known as the solvation enthalpy, determines the kind of solvent.
  • Non-polar solvents have very low solvation enthalpies because the energy required to overcome the lattice enthalpies between the components of the solute in the case of non-polar solvents is insufficient.

Solved Example

Below are a few solved examples related to the Solubility Formula. Students can go through these solved examples and head straight to the Extramarks website and mobile application for more updates regarding solved examples, notes and study materials pertaining to the Solubility Formula.

  1. Molar solubility for tin iodide, SnI2, is 1.28 x 10-2 mol/L. Find the Ksp of this chemical.

Answer: The solubility of SnI2 in equilibrium is

SnI2(s) = 2I- + Sn2+(aq) (aq)

The Ksp expression appears as follows:

Ksp equals [Sn2+][I-]

SnI2 produces 2.0 mol of I- per mol as opposed to 1.0 mol of Sn2+.

[Sn2+] = 1.28 × 10-2M

[I–] = (2) × 1.28 × 10-2M

[I–] = 2.56 × 10-2M

Ksp equation: Substitute these values.

Ksp = (1.28 ×× 10-2M)(2.56 × 10-2M)

Ksp then equals 8.4 10-6 M2.

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