Question

Solubility of a gas in a liquid increases on:

• A. Increasing Pressure
• B. Increasing Temperature
• C. Decreasing Pressure
• D. Increasing Both Pressure And Temperature

Answer 1

The correct option is A

Increasing Pressure

Explanation:

Solubility:

• Solubility is basically defined as the amount of the given substance which can be dissolved in a certain amount of the solvent at a particular temperature and pressure.
• It is actually a new bond that is being formed between the solute as well as the solvent molecules.

Solubility of gas in liquid: Henery's law

• The solubility of gas is generally directly proportional to the partial pressure of the gas which is present above the surface of the liquid or the solution.
• As because of Henry's law:- $\mathrm{solubility}\propto \mathrm{pressure}$

Effect of temperature:

• On increasing the temperature, the kinetic energy of gaseous particles increases.
• Due to an increase in the kinetic energy, gaseous particles can easily come out of the liquid.
• So, the solubility of a gas in a liquid decreases with the increase in temperature as with increasing the temperature the volume of dissolved gas decreases.

Therefore, the correct option is (A).