Studies on Solubility of Second Solute in Saturated Solution

Abstract

Studies on solubility of two or more solutes in single/mixed solvents find wide range of applications in pharmaceutical industries. The objective of the present work is to study the solubility of binary solute system. The effects of temperature and concentration of first solute on the solubility of second solute were investigated. Sodium Chloride (NaCl) and Potassium Chloride (KCl) were the two solutes used in the study. Solubility studies were carried out at three different temperatures namely 30, 40 and 50 °C respectively. Saturated solution of first solute was used in addition to its concentration on weight percentage from 10 to 30%. It was observed that the solubility of single solute increased with increase in temperature. It was also noticed that the dissolution of second solute influenced the solubility of the first solute. The results also showed that irrespective of the number of solutes present in a solution, the solubility increased with increase in temperature.