Question

Solubility product is
(A) The ion product of an electrolyte in its saturated solution
(B) The product of the solubility of the ion of the electrolyte
(C) The product of solubilities of the salt
(D) The product of the concentration of the ions

Answer 1

Hint: Solubility means the tendency of a solute to get dissolved in a solvent to form a solution. When a solute is dissolved in water, it can be completely soluble, sparingly soluble, or completely insoluble. We calculate the solubility of a sparingly soluble salt. Sparingly soluble salt means salt that when dissolved in water gets partially dissolved and a part of it remains undissolved.

Complete Step by Step Solution:
The solubility product is equilibrium between reactants and products. The reactants are the electrolyte and the products are the ions (cations and anions) of the electrolyte. It is denoted by${{K}_{sp}}$. The solubility product is calculated as the product of the concentration of each of the ions, each raised to power to its coefficient in a balanced equation. More is the solubility product; more is the solubility of the compound and vice-versa.
For a compound, say${{A}_{a}}{{B}_{b}}$, the solubility product is given as
${{K}_{sp}}={{\left[ {{A}^{+}} \right]}^{a}}{{\left[ {{B}^{-}} \right]}^{b}}$
Correct Option: (A) The ion product of an electrolyte in its saturated solution

Note: The solubility product depends upon temperature, common-ion effect, diverse-ion effect, and the presence of ion pairs. The units of solubility are moles per litre. However, the units of ${{K}_{sp}}$ vary for each of the electrolytes depending upon the molar concentration of reactants and products. A saturated solution is a solution in which there is a maximum amount of solute present that a solvent can dissolve.