Pressure has the greatest effect on the solubility of

Pressure has the greatest effect on the solubility of gases

Explanation:

Henry's law states that the solutiblity of a gas in a liquid is propotional to the pressure that the gas exertes over the liquid.

Call Sg the solubility molar concentraion of tghe gas, mole concentration of the gas, Kh the constant of proportionality, and Pg the pressure of the gas, then:

Sg = Pg * Kh

Then, if the pressure increases the solubility of the gas (its concentration in the liquid) increases, and if the pressure decreases the solubility of the gas decreases.

The physical reason for the influence of the pressure on the solubility is that more pressure forces the contact between the gas over the liquid and the liquid making that more gas gets into the liquid.