Question

How do you calculate ${{K}_{sp}}$ from concentration?

Answer 1

Solubility product is defined as the equilibrium constant that depends on temperature. The value of solubility products is increased if we increase the temperature due to the increase in solubility. Solubility products are denoted by the symbol ${{K}_{sp}}$ .

Complete step-by-step answer: Solubility is defined as the tendency of a substance mainly solute to dissolve in a solvent to form a solution.
Let us discuss the significance of solubility product-
If the solubility product of a substance is small then it will have low solubility.
Solubility products are used to determine whether the precipitate formed or not.
If the ionic product is more than the saturated product, precipitation will take place.
If an ionic product is less than the saturated product, precipitation will not take place. Solution is diluted.
If the ionic product is equal to the saturated product, the solution is saturated and there will be no precipitation.
To calculate ${{K}_{sp}}$ , the formula used is-
${{K}_{sp}}={{\left[ {{A}^{+}} \right]}^{m}}{{\left[ {{B}^{+}} \right]}^{n}}$
Where, ${{K}_{sp}}$ is the solubility product
$\left[ {{A}^{+}} \right]$ and $\left[ {{B}^{+}} \right]$ are the concentration of the products,
$n$ and $m$ are the stoichiometric coefficients.
Solubility products deal with the concentration of the products.
Factors that affect solubility are common ion effect and simultaneous solubility. Solubility product tells us about the slightly ionic compound.

Note: The nature of the solvent helps in determining the amount of energy released during solvation.
The difference between the solubility and solubility product is that solubility is defined as the solute dissolved in solvent to form solution whereas solubility product is defined as the equilibrium constant that provide insight into the equilibrium between solid solute and its constituent ion.