Determination of Solubilities of Sparingly Soluble Salts

This article discusses the determination of solubilities of sparingly soluble salts in water. The specific conductance (K) of a saturated solution of a sparingly soluble salt can be used to determine its solubility. The solubility is then expressed in units of moles per liter.

Questions

1. What is a sparingly soluble salt?
2. What is the specific conductance of a solution?
3. How can the solubility of a sparingly soluble salt be determined from its specific conductance?

Answers

1. A sparingly soluble salt is a salt that dissolves only to a small extent in water.
2. The specific conductance of a solution is a measure of its ability to conduct electricity.
3. The solubility of a sparingly soluble salt can be determined from its specific conductance by using the following equation:

   “`
   S = K / (K0 – K)
   “`

   where:

   * S is the solubility of the salt in moles per liter
   * K is the specific conductance of the saturated solution of the salt
   * K0 is the specific conductance of pure water