Henry’s law states that in a solution, “the partial pressure of the gas in vapour phase (p) is proportional to the mole fraction of the gas (x) in the solution”

The equation is given as p = KHx, where KH is the Henry Law’s constant. The constant is a function of the nature of the gas.

KH = x/p, from this equation we can deduce that higher the value of KH at a given pressure, the lower is the solubility of the gas in the liquid.