Question

An increase in the temperature of a solution usually: a)increases the boiling point. b)increases the solubility of a gas in the solution. c)increases the solubility of a solid solute in the solution. d)decreases the solubility of a solid solute in the solution. e)decreases the solubility of a liquid solute in the solution.

Answer 1

Answer: Option (c) is the correct answer.

Explanation:

Relation between kinetic energy and temperature is as follows.

                      $K.E = \frac{3}{2}kT$

Since, kinetic energy is directly proportional to temperature. So, when there will be increase in temperature then this will also lead to increase in kinetic energy of the molecules of a substance.

So, when a solid substance is dissolved in a solution whose temperature is increased then molecules of the solid will also gain kinetic energy. As a result, more number of collisions will occur due to which bond between the molecules of solid will break.

Therefore, there will be increase in solubility of the solid.

Thus, we can conclude that an increase in the temperature of a solution usually increases the solubility of a solid solute in the solution.