Question

Explain the effect of impurities on critical solution temperature

Answer 1

At a fixed temperature, the composition of each solution is fixed, and both the solutions are in equilibrium. Two solutions of different compositions existing in equilibrium with one another are known as conjugate solutions. Above a particular temperature, such solutions are completely miscible in all proportions. Such a temperature is known as the Critical Solution Temperature (CST) or Consolute Temperature. As the mutual solubility increases with temperature in this particular case, it is known as Upper Consolute Temperature.