:''p'' לחץ חלקי של הגז מעל התמיסה (ביחידות [[אטמוספירה (מידה)|אטמוספירה]])
:''x'' [[שבר מולי|השבר המולי]] של הגז בתמיסה
As can be seen by comparing the equations in the above table, the Henry's law constant ''k''<sub>H,pc</sub> is simply the inverse of the constant ''k''<sub>H,cp</sub>. Since all ''k''<sub>H</sub> may be referred to as Henry's law constants, readers of the technical literature must be quite careful to note which version of the Henry's Law equation is being used.<ref name=SmithandHarvey/>
It should also be noted the Henry's Law is a limiting law that only applies for ''sufficiently dilute'' solutions. The range of concentrations in which it applies becomes narrower the more the system diverges from non-ideal behavior. Roughly speaking, that is the more chemically ''different'' the solute is from the solvent.
It also only applies simply for solutions where the solvent does not [[chemical reaction|react chemically]] with the gas being dissolved. A common example of a gas that does react with the solvent is [[carbon dioxide]], which forms [[carbonic acid]] (H<sub>2</sub>CO<sub>3</sub>) to a certain degree with water.
===Temperature dependence of the Henry constant===