Question

Why do gases always tend to be less soluble in liquids as the temperature is raised?

Answer 1

Hint Gases when they are dissolved in the liquid liberate large amounts of heat but as the temperature changes i.e. it is increased , the reaction shifts in the backward direction and heat is used. Now with the help of this you can easily answer the statement.

Complete step by step answer:
First of all, let’s discuss what gases are. Gases represent the one of the states of matter in which the particles are loosely arranged and can freely move from one direction to the other.
The gases neither have any fixed shape nor definite volume. The particles of the gases possess high kinetic energy as they have high velocity because they can easily move in any direction.
Now considering the statement as; When a gas is dissolved in the liquid , it results in the formation of the solution along with the evolution of heat i.e. it means that it is an exothermic process.
When the temperature is raised or increased, then the equilibrium of the reaction shifts in the backward direction and heat is used in that and thus, the gases are less soluble in liquids.
Hence, due to the change in the direction of the equilibrium as the temperature raises, the gases are less soluble in the liquids.

Note: Matter is something which has some mass and occupies a certain volume. Matter can exist in three states i.e. solid, liquid and gas.
In solid, the particles are closely packed and cannot move freely. They have definite shape and volume.
In liquids, the particles are somewhat loosely packed as compared to the solids. They have no fixed shape and take the shape of the container in which they are placed but have definite volume.
In gases, the particles are very loosely packed and have no fixed shape and definite volume.